CN117266250A - Device and method for plugging and repairing large-scale cracks or pit slots by running water - Google Patents
Device and method for plugging and repairing large-scale cracks or pit slots by running water Download PDFInfo
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- CN117266250A CN117266250A CN202311005805.0A CN202311005805A CN117266250A CN 117266250 A CN117266250 A CN 117266250A CN 202311005805 A CN202311005805 A CN 202311005805A CN 117266250 A CN117266250 A CN 117266250A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0021—Mortar
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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Abstract
The invention provides equipment and a method for plugging and repairing large cracks or pit slots by flowing water, wherein an anti-overflow cover plate is arranged at the top of each hole slot, a convex slot is arranged on each anti-overflow cover plate, and reserved round holes are formed in each convex slot; the grouting device comprises a bar magnet with a reserved round hole in the center, an electromagnet, a first glass fiber sleeve with the electromagnet and a grouting round tube; the lower end of the grouting circular tube is provided with a grouting hole, and a magnetic particle channel is arranged in the grouting circular tube; comprising magnetized waste iron particles, zhong Ruzhuang flux linkages and flux linkage strings; the device comprises a second glass fiber sleeve, a magnetic rod, a buffer bag and a grouting anchor rod; also included are magnetic shields and magnetic cages. The equipment and the method aim at the new technology of plugging and repairing the larger cracks and pits, utilize the magnetic mortar to converge from the periphery to the magnetic source under the action of the magnetic field, closely bite to form a whole body tightly bonded with the hole wall, improve the filling effect of the holes and the grooves, simultaneously have the function of plugging the water head, and realize the formation of a compact anchoring body for repairing in a larger space range under the condition of flowing water.
Description
Technical Field
The invention relates to equipment and a method for plugging and repairing a large-sized crack or pit slot by using water, and belongs to the technical field of crack or pit slot repair.
Background
In the engineering field, a quite common problem is that cracks and pit slots are not filled tightly, the cracks are generated in a plurality of reasons and have a gradual expansion trend after the structure is loaded, and the cracks also have geological disasters such as earthquakes and the like caused by sudden changes of external environments, so that the cracks are developed into large-sized cracks, the occurrence of the cracks possibly indicates insufficient bearing capacity, the cracks can influence the applicability and durability of the structure, and particularly, under the conditions of moving water, large-head cracks, underground large-sized mine water burst and the like in the hole slots, the plugging and repairing difficulty is greatly improved.
At present, many researches are carried out on plugging repair, but the problems that the grouting is carried out on the plugging repair and the grouting filling is not compact exist at present, the grouting is difficult for the plugging repair and the grouting is carried out on the plugging water, the magnetic field intensity in the edge area is found to be low in the filling process of the hole by utilizing the magnetic mortar, the current situation that the adsorption force to the magnetic mortar is small exists, the plugging cannot be carried out due to easy flushing of the water, or gaps exist between the plugging water and the inner wall of a crack after the slurry is solidified, and the repairing effect is poor.
Disclosure of Invention
Aiming at the problems, the invention aims to provide equipment and a method for plugging and repairing large cracks or pit slots, which are widely applied to large crack and pit slot repairing projects of structures such as dams, roads, basements and the like caused by external force or geological disasters such as earthquakes by utilizing magnetic mortar to converge from the periphery to a magnetic source under the action of a magnetic field, closely engaging to form a whole body tightly bonded with a hole wall, improving the filling effect of the hole slots, simultaneously having the function of plugging a water head, realizing the repairing of compact anchoring bodies in a large space range under the condition of flowing water and improving the engineering durability.
In order to achieve the technical characteristics, the aim of the invention is realized in the following way: the equipment for plugging and repairing the large-scale cracks or pit slots by using water comprises a hole slot arranged in a rock stratum, wherein an anti-overflow cover plate is arranged at the top of the hole slot, a convex slot is arranged on the anti-overflow cover plate, and a reserved round hole is arranged on the convex slot; the grouting device comprises a bar magnet with a reserved round hole in the center, an electromagnet, a first glass fiber sleeve with the electromagnet and a grouting round tube; the lower end of the grouting circular tube is provided with a grouting hole, and a magnetic particle channel is arranged in the grouting circular tube; comprising magnetized waste iron particles, zhong Ruzhuang flux linkages and flux linkage strings; the device comprises a second glass fiber sleeve, a magnetic rod, a buffer bag and a grouting anchor rod; also included are magnetic shields and magnetic cages.
The broken rock stratum in the clearance hole inslot to make hole inslot surface level and smooth, the tongue embedding hole inslot of anti-overflow apron adjusts to relevant position and fixes.
The first glass fiber sleeve of the prefabricated electromagnet has certain strength, the bottom end is closed, the upper end is opened, the inner diameter of the first glass fiber sleeve is larger than the outer diameter of the electromagnet, lubricating oil is coated in the first glass fiber sleeve, and the electromagnet is installed;
the grouting circular tube is made of glass fiber, a grouting hole is reserved on the side wall of the lower end, the grouting circular tube has certain strength, the lower end is closed, the upper end is opened, the grouting speed is controlled by using high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, and a compact anchoring body is formed by extruding and diffusing from the grouting hole from inside to outside.
The magnetic particle channel consists of a corrugated pipe, a film bag filled with magnetorheological fluid and a steel pipe; the corrugated pipe is connected to the far end of the membrane bag and penetrates out from a slurry outlet hole on the side wall of the grouting circular pipe; the membrane bag filled with the magnetorheological fluid is in a circular tube shape, the inside of the membrane bag is provided with a magnetic particle channel, the near end of the membrane bag is connected with a steel tube, the membrane bag is in a T-shaped structure, the magnetorheological fluid in the membrane bag is reversible, the membrane bag is expanded to be in a circular tube shape under the action of a magnetic field, the membrane bag has high strength, the membrane bag is in a flow state after the magnetic field is withdrawn, and the magnetic particle channel can be pulled out from the upper end for recycling.
The waste iron particles are formed into prismatic particles with different particle sizes by utilizing waste iron slag, the magnetic particles are divided into 2 mm-3 mm and 3 mm-5 mm according to the particle sizes, and the volume ratio is 3: and 7, according to the size of the opening diameter of the hole groove, the adopted magnetic particles refer to the proportion, the selected particle size is increased or decreased in multiple, and the particle size grading is good.
The Zhong Ruzhuang flux linkage is a pyramid-shaped cluster with adsorptivity, magnetic particles are adsorbed outside the first glass fiber sleeve under the action of a magnetic field generated by the electromagnet, the closer to the electromagnet, the larger and denser the particle size of the adsorbed magnetic particles are, the pyramid-shaped cluster formed by converging the magnetic particles can also generate a magnetic field, and the magnetic mortar is adsorbed on the surface to form Zhong Ruzhuang flux linkage;
The magnetic chain string is formed by a magnetized cylindrical steel ball, a hole channel is reserved in the center of the magnetic chain string, an alloy steel wire rope passes through a long chain formed by the magnetic chain string, the alloy steel wire rope has good pulling resistance and tensile property, a certain length is reserved, hooks are connected to the two ends of the alloy steel wire rope, under different working conditions, the steel balls are replaced by waste spherical iron particles or magnetizable substances in different shapes of columnar iron blocks, and the size matched with the hole groove is selected.
The second glass fiber sleeve has certain strength, the bottom end is closed, the upper end is open, the inner diameter of the second glass fiber sleeve is larger than the outer diameter of the magnetic rod, lubricating oil is coated in the second glass fiber sleeve, and the magnetic rod is filled in the second glass fiber sleeve; when the pit groove and the underground well of underground moving water are involved, the second glass fiber sleeve is provided with a tubular chute, and the water pumping pipe can move up and down in the chute to drain water;
the magnetic rod is placed into a second glass fiber sleeve, and the magnetic rod adopts a magnet which comprises a neodymium-iron-boron super-strong permanent magnet, a high-strength electromagnet and superconductors and can generate strong magnetism;
the buffer bag is an inflatable bag between the second glass fiber sleeve and the magnetic rod, and plays a role in fixing and protecting the magnetic rod in the grouting construction process; when the construction is completed, partial gas is discharged when the magnetic rod is recovered, the magnetic shielding cover can be placed between the second glass fiber sleeve and the magnetic rod, the strong magnetic field generated by the permanent magnet is shielded, and the magnetic rod and the magnetic shielding cover are taken out to complete recovery.
The grouting anchor rod comprises a movable pipe in the middle, a sealing piston is arranged at the lower end between the movable pipe and a grouting barrel, an outer pipe is the grouting barrel, grouting water seepage holes are formed in the grouting barrel, a magnetic ring is sleeved outside the grouting barrel, a cavity formed between the inner pipe and the outer pipe is a water pumping channel, and the two sides of a crack form an angle of 5-15 degrees with the horizontal plane direction, so that grouting is performed, and the connection strength between a repaired part and an original structure is increased.
The magnetic shielding cover has certain strength, the bottom end is closed, the upper end is open, the magnetic shielding cover is cylindrical, the diameter of the magnetic shielding cover is between the outer diameter of the magnetic rod and the inner diameter of the second glass fiber sleeve, and the magnetic shielding cover is made of a metal material with a magnetism isolating effect;
the magnetic cages consist of iron cages surrounded by iron nets, waste iron sheets and stones, a plurality of magnetic cages are fastened on an iron chain, and the sizes of the magnetic cages are adjusted according to the sizes of the holes and the grooves; the iron cage is a cage-shaped structure formed by processing cross grids; the waste iron sheets are filled in the outer ring layer, and after magnetization, the waste iron sheets have strong magnetism and can drive the magnetic cage to converge towards the magnetic rod; the stone is clamped on the inner ring layer in the middle of the magnetic cage, so that the gravity of the magnetic cage is increased, the volume is large, and the water blocking cost is low.
The method for plugging and repairing the large-sized cracks or pit slots by adopting the equipment for plugging and repairing the large-sized cracks or pit slots by using the water, the cracks and the pit slots are detected, the large-sized cracks or pit slots are searched by an ultrasonic detector, the parameters of trend, width, length and depth and the development degree of crack root systems are determined by utilizing ultrasonic reflection, and when the large-sized main cracks are the main ones, the method comprises the following construction steps:
Step1.1, material preparation: the overflow-preventing cover plate comprises an overflow-preventing cover plate convex groove, a strip magnet with a reserved round hole in the center, a first glass fiber sleeve with an electromagnet in a prefabricated mode, and a grouting circular tube, wherein a grouting hole is formed in the lower end of the grouting circular tube, a magnetic particle channel is formed in the grouting circular tube, the channel consists of a corrugated tube, a film bag filled with magnetorheological fluid and a steel tube, and magnetized waste iron particles and Zhong Ruzhuang are magnetically linked;
step1.2, hole groove cleaning: flattening the outer surface of a hole groove, cleaning a broken rock stratum on the inner surface layer of the groove, cleaning the hole groove by wind pressure or a steel wire brush, wherein the hole groove is free of mud and particles and is substantially a U-shaped convex groove;
step1.3, fixing an overflow-proof cover plate: according to the trend of the hole grooves, arranging an anti-overflow cover plate in a seam-riding way from bottom to top and from left to right, embedding a convex groove of the anti-overflow cover plate into the hole grooves, and inserting a grouting pipe into a round hole reserved in the middle of the convex groove of the cover plate after fixing the position of the cover plate;
step1.4, bar magnet and electromagnet position arrangement: the strip magnets are sealed and placed in the convex grooves of the cover plate, and then cylindrical electromagnets are placed in the first glass fiber sleeve of the outer ring of the grouting pipe;
step1.5, preparing filling mortar and waste iron slag particles: iron powder, an expanding agent and an epoxy resin material are added into mortar according to a certain proportion to prepare magnetic mortar, the performance of the magnetic mortar is tested, normal use of the magnetic mortar in a filling stage is ensured, the waste iron slag is utilized to shape prismatic particles with different particle diameters, the magnetic particles are separated into 2 mm-3 mm and 3 mm-5 mm according to the particle diameters through screening, and the volume ratio is 3:7, according to the size of the opening diameter of the hole slot, the adopted magnetic particles can refer to the proportion thereof, the selected particle size can be increased or decreased in multiple, and the particle size grading is good;
Step1.6, injecting magnetized waste iron particles and magnetic mortar: the magnetized iron-containing particles are injected into a magnetic particle channel in a grouting circular tube, the magnetic particles are adsorbed outside a first glass fiber sleeve under the action of a magnetic field generated by an electromagnet, the closer to the electromagnet, the larger and denser the particle size of the adsorbed magnetic particles are, the pyramid-shaped clusters formed by the convergence of the magnetic particles can generate a magnetic field, and the magnetic particles have adsorption force on magnetic mortar; the magnetic mortar is placed into grouting equipment, and is sequentially injected into grouting round pipes from bottom to top and from left to right, the speed is controlled by using high-pressure grouting equipment, the grouting pressure of the magnetic mortar can overcome the magnetic field suction force, and the grouting pressure is extruded and diffused from the inside to the outside from a grouting hole to form a compact anchoring body;
step1.7, surface repair: after the magnetic particles are injected, the demagnetizing is carried out to pull out the magnetic particle channel from the upper end of the grouting circular tube, after the slurry is solidified to a certain degree, the electromagnet is powered off to demagnetize, the strip magnet, the overflow-preventing cover plate and the electromagnet are removed in sequence and recycled, and the magnetic mortar is adopted to carry out plugging treatment on the inside of the first glass fiber sleeve and the convex groove;
when water exists in the hole groove and wading is carried out, sub cracks are developed and structural reinforcement blocking is carried out, and the method comprises the following construction steps:
Step2.1, material preparation: the overflow-preventing cover plate is characterized in that a reserved round hole is formed in a convex groove of the overflow-preventing cover plate, a strip magnet with a round hole reserved in the center and a magnetic chain string are formed by stringing alloy steel wire ropes for cylindrical steel balls, a second glass fiber sleeve is arranged on the second glass fiber sleeve, a tubular sliding groove, a water pumping pipe, a magnetic rod, a buffering bag and a grouting anchor rod are arranged on the sleeve, and the grouting anchor rod comprises a movable pipe, a sealing piston, a grouting barrel, a grouting water seepage hole, a magnetic ring, a water pumping channel and a magnetic shielding cover;
step2.2, flux linkage preparation: according to the width of the crack, cylindrical steel balls with proper sizes are selected to magnetize, N is connected with N poles, and an alloy steel wire rope is used for forming a flux linkage;
step2.3, hole groove cleaning: flattening the outer surface of the hole groove, cleaning the broken rock stratum on the inner surface layer of the groove, and cleaning the hole groove by wind pressure or a steel wire brush;
step2.4, fixing an overflow-proof cover plate: firstly, putting the prepared magnetic chain into a slot crack, arranging an anti-overflow cover plate in a seam from bottom to top according to the trend of the slot, embedding a convex groove of the anti-overflow cover plate into the slot, and fixing the position of the cover plate;
step2.5, bar magnet and bar magnet arrangement: the strip-shaped magnet is sealed and placed in a convex groove of the cover plate, then a cylindrical strong magnetic rod is placed in a second glass fiber sleeve, an air bag in the second glass fiber sleeve is inflated, the position of the magnetic rod is fixed, then the strip-shaped magnet is integrally placed in a round hole reserved in the middle of the convex groove of the cover plate, and one end of a magnetic chain is subjected to the adsorption force of the magnetic rod and is connected with the magnetic rod;
Step2.6, grouting and drainage support of the anchor rod: the construction is reinforced, the two sides of the hole groove are staggered, the anchor rod is drilled and grouting is carried out, the speed is controlled by utilizing high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, compact anchor bodies are formed by extruding and diffusing from inside to outside from the grouting hole, when the construction is carried out in the water moving hole groove, water is pumped out through the grouting water seepage hole at the upper part through the water pumping channel, along with the increase of grouting, the grouting liquid enters the water pumping channel from the water seepage hole and is sunk on the sealing piston, the sealing piston pressure is increased, the movable pipe in the middle is gradually pulled outwards, and the grouting is completed in a circulating manner; under the action of a magnetic field, the magnetic mortar is tightly adsorbed on the periphery of the magnetic rod, the magnetic flux linkage is added to enlarge the influence range of the magnetic field, the long and narrow gap can be enhanced under the action of the magnetic field, and the filled magnetic mortar is more compact;
step2.7, surface repair: after the slurry is solidified, deflating an air bag in the sleeve, sleeving a magnetic shielding cover outside the magnetic rod from top to bottom, taking out and recycling a shielding magnetic field, removing the strip-shaped magnet in sequence without recycling the second glass fiber sleeve, and sealing the inside of the second glass fiber sleeve and the convex groove by adopting magnetic mortar;
when the underground mine is involved, the large underground excavated hole groove is internally provided with movable water flow and water burst blocking, and the method comprises the following construction steps:
Step3.1, material preparation: the overflow-preventing cover plate is characterized in that a circular hole is reserved on a convex groove of the overflow-preventing cover plate, a strip magnet with a circular hole reserved in the center, a tubular chute, a water pumping pipe, a magnetic rod, a buffer bag and a grouting anchor rod are arranged on the sleeve, the grouting anchor rod comprises a movable pipe in the middle, a sealing piston, a grouting barrel, a grouting water seepage hole, a magnetic ring, a water pumping channel, a magnetic shielding cover and a magnetic cage, and the magnetic cage consists of an iron cage, a waste iron sheet and a stone which are surrounded by an iron net;
step3.2, preparing a water shutoff magnetic cage: according to the width of the hole slot, a magnetic cage with a proper size range is formulated, an iron net is welded into an iron cage, waste iron blocks and waste lace iron materials are filled in an inner outer ring layer, stone blocks are filled in an inner ring layer, and the gravity and the volume are utilized to block flowing water flow;
step3.3, fixing an overflow-proof cover plate: a plurality of prepared water blocking magnetic cages are fastened on an iron chain and put into a target area, an anti-overflow cover plate is arranged above a hole groove of a target water blocking position, a convex groove of the anti-overflow cover plate is embedded in the hole groove, and the position of the cover plate is fixed;
step3.4, bar magnet and bar magnet arrangement: the strip-shaped magnet is sealed and placed in a convex groove of a cover plate, then a cylindrical strong magnetic rod is placed in a cylindrical second glass fiber sleeve, an air bag in the second glass fiber sleeve is inflated, the position of the magnetic rod is fixed, then the magnetic rod is integrally placed in a round hole reserved in the middle of the convex groove of the cover plate, the magnetic cage for blocking water is discretely distributed on the accessory of a target water blocking area, and under the action of magnetic force, waste iron sheets and iron nets in the magnetic cage are magnetized and are tightly adsorbed on the magnetic rod to be gathered together to form a water blocking block with a larger volume;
Step3.5, grouting and drainage plugging: the speed is controlled by using high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, compact anchoring bodies are formed by extruding and diffusing from inside to outside from a grouting hole, when the grouting equipment is used for construction in a water moving hole groove, water is pumped out through a grouting water seepage hole at the upper part and a water pumping channel, along with the increase of grouting, slurry enters the water pumping channel from the water seepage hole and is deposited on a sealing piston, the sealing piston pressure is increased, a movable piston tube in the middle is gradually pulled outwards, and grouting is completed in a circulating manner; under the action of a magnetic field, the magnetic mortar is tightly adsorbed on the periphery of the magnetic rod, and meanwhile, the water shutoff magnetic cage also has strong magnetism, so that the influence range of the magnetic field is enlarged by adding the magnetic cage, the magnetic mortar is tightly adsorbed, and the water head can be plugged; the second glass fiber sleeve is reserved with a tubular chute, and the water suction pipe can be pulled in the chute to assist the anchor rod to discharge water in the hole groove together;
step3.6, surface repair: after pumping water, sliding a water pumping pipe out of a chute, deflating an air bag in a second glass fiber sleeve after the slurry is solidified, sleeving a magnetic shielding cover outside a magnetic rod from top to bottom, taking out and recycling a shielding magnetic field, removing a bar magnet and an anti-overflow cover plate in sequence from the second glass fiber sleeve without recycling the second glass fiber sleeve, and performing plugging treatment on the second glass fiber sleeve and the convex groove by adopting magnetic mortar;
The ultrasonic detector is used for detecting the large-scale cracks or pits, and the method comprises the following testing steps:
step1, manufacturing a reality simulation model: simulating cracks with different pore widths, depths, trends, roughness and tortuosity of pore channels by using a transparent resin casting model, and constructing pit slots under moving water;
step2, simulating a construction flow: according to actual working conditions, selecting Step1.1-Step1.7, step2.1-Step2.7 or Step2.1-Step2.7 according to a proportion to perform plugging grouting simulation;
step3, performance test: the whole grouting plugging test simulation process is recorded by a camera, the process of plugging and filling magnetic mortar is recorded, how the water film and gas of a repairing interface are discharged by slurry is observed, and a rule is searched; after the flux linkage and the magnetic cage are added, measuring the magnetic attraction value at the edge of the crack, and observing the filling condition of the interface and whether the interface can resist moving water; measuring the flowing water flow rate through a flow rate measuring instrument, measuring the application range, and observing the position of a damaged interface;
step4, optimization test: and adjusting the test scheme, and taking remedial measures in advance for the predicted damage interface, and verifying whether the construction is reasonable in advance through visual simulation test.
The invention has the following beneficial effects:
1. the invention provides equipment and a method for plugging and repairing large cracks or pit grooves by moving water, which have the problems of high water head pressure, difficult plugging, uncompacted filling and separation from a hole wall, and the current situation that the magnetic mortar has low magnetic field strength in an edge area and small adsorption force on the magnetic mortar is found in the filling process of the large holes by utilizing the magnetic mortar.
2. The invention adopts the equipment such as the anti-overflow cover plate and the like to prevent slurry from overflowing out, can repair crack holes and grooves at different positions and angles, and the convex grooves on the anti-overflow cover plate are embedded into the holes and grooves to place the strip magnets, so that the magnetic field strength is increased, the filling compactness of the magnetic mortar is ensured, the filling porosity is reduced, and the external water infiltration is avoided, thereby influencing the structural life of the repaired part.
3. When grouting is performed by adopting the grouting circular tube, the speed is controlled by using high-pressure grouting equipment, the magnetic mortar grouting pressure can just overcome the magnetic field suction force, a compact anchoring body is formed by extruding and diffusing from inside to outside from a grouting hole, the penetration of outside air and water is avoided, and the durability of a repaired part is ensured.
4. The invention adopts the separated magnetic particle channels in the grouting circular tube, large-grain-diameter magnetic particles can be filled in during grouting, the large-grain-diameter magnetic particles can generate strong magnetic attraction outside, the formed bell-shaped emulsion magnetic chain can enlarge the influence range of magnetic fields between holes, the magnetic field intensity of the edge area close to the hole wall is increased, the magnetic mortar is more closely adhered to the hole wall and cannot be flushed away by passive water, the problem that slurry is not closely packed and separated from the hole wall is solved, and the grouting circular tube is suitable for the crack and hole slot water-driving plugging repair engineering mainly comprising large-scale main cracks, and has wide engineering practical significance and application prospect.
5. The invention adopts a membrane bag filled with magnetorheological fluid at the lower end of a magnetic particle channel, when grouting is performed, an electromagnet is electrified to generate a magnetic field, the strength of the magnetorheological fluid is rapidly improved under the action of the magnetic field, the channel is clamped and fixed in a grouting circular tube, and after power failure and demagnetization, the channel can be recovered; the steel pipe is made of silicon steel and other metal with magnetism isolating effect, so that mutual interference between magnetized magnetic particles and a magnetic field generated by an electromagnet in the process of being introduced from the inside is avoided.
6. The invention adopts the magnetization of waste iron particles, the cost of waste iron is low, waste is recycled and reused, the invention is green and environment-friendly, and most importantly, the magnetization of waste iron is large, and the engineering effect is good.
7. The electromagnet adopted by the invention can be recycled after grouting is completed, and is environment-friendly and reduces the construction cost.
8. The invention adopts the magnetic chain string that N pole and N pole are connected into a string after the cylindrical steel ball is magnetized, the alloy steel wire rope can bend and deform in the crack, the influence range of the magnetic field between holes can be enlarged, the magnetic field in the long and narrow sub-crack far away from the magnetic rod is enhanced, meanwhile, the magnetic mortar is injected while being drained, and is densely filled in the crack at the far away position by the adsorption force, so that the magnetic field intensity of the remote sub-crack area is increased, the magnetic mortar is more closely adhered with the hole wall, the slurry in the sub-crack can be fully filled without being flushed away by the passive water, the problem that the slurry is not closely filled and separated from the hole wall is solved, the invention is suitable for the crack and hole groove dynamic water plugging repair engineering mainly comprising large main cracks and developed sub-cracks, and is also suitable for the large hole groove mainly comprising single crack, and has wide engineering practical significance and application prospect.
9. The invention adopts magnetized cylindrical steel balls, a central shaft is drilled into a through hole, an N pole is connected with the N pole, an alloy steel wire rope is strung into a long chain, a certain deformation length is reserved for the alloy steel wire rope, and hooks are connected at two ends of the alloy steel wire rope; after the magnetic rod is added, one end of the magnetic rod is quickly adsorbed on the magnetic rod, the space magnetic field in the hole groove is enhanced, the magnetic field generated after magnetization is strong, the engineering economy is met, and the feasibility is strong.
10. The glass fiber sleeve is provided with a tubular chute and a water pumping pipe, the water pumping pipe can slide up and down along the tubular chute in the glass fiber sleeve, when the flowing water is much accumulated, the water is drained in time during grouting, and the water pressure is reduced; the buffer bag between the glass fiber sleeve and the magnetic rod is inflated to clamp the magnetic rod, the position of the magnetic rod is fixed, a buffer space is generated during deflation, the electromagnetic shielding cover is put in, and a magnetic field generated by the strong magnetic rod is isolated, so that the magnetic field is convenient to recover.
11. The invention adopts grouting anchor rods to carry out structural reinforcement, holes and grooves are drilled at certain angles at two sides of a crack in a staggered way, the stress condition is improved, the connection between a repair grouting area and surrounding rock mass is increased, the speed is controlled by high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, compact anchoring bodies are formed by extruding and diffusing from inside to outside from the grouting holes, the penetration of external air and water is avoided, and the durability of the repaired part is ensured.
12. The invention adopts a movable pipe and a sealing piston which are arranged in the middle of a grouting anchor rod, a pumping channel is formed between the movable pipe and an outer grouting cylinder, water in a hole groove is extruded by grouting liquid and is positioned on the upper layer, and the water enters the pumping channel through a grouting water seepage hole at the upper part of the grouting cylinder and is pumped out of the groove; along with the increase of the slurry, the water level rises, the inner movable pipe is pulled outwards, part of water seepage holes are changed into grouting holes, grouting is completed in a circulating mode, and grouting and drainage are achieved.
13. The invention uses the characteristics of large volume and large gravity to block water, and the magnetic cages have the magnetic expansion effect, so that the slurry agglomeration adsorption force is increased, the pores among the magnetic cages are filled, the pores in water are effectively extruded, the purpose of blocking the water is achieved, the invention is suitable for the conditions of flowing water, water burst and the like in repairing large cracks or pits, and has wide engineering practice significance and application prospect.
14. According to the invention, the inner ring layer of the magnetic cage is made of stone blocks, the outer ring layer is made of waste lace iron materials, the waste iron sheet iron blocks are wrapped by the crisscrossed iron net, and are extruded on the outer ring layer, so that the stone blocks with slightly smaller particle sizes of the inner ring layer are prevented from leaking, the magnetic field intensity on the surface of the magnetic cage is higher, and the adsorption force on magnetic mortar is stronger.
15. The magnetic rod adopted by the invention can be pulled out from the glass fiber sleeve to be recycled after grouting is completed, and the glass fiber sleeve is not recycled for grouting plugging treatment.
16. The device provided by the invention has the advantages of simple structure, low cost and convenient operation, can conveniently realize the construction and engineering quality assurance of large-scale crack or pit slot water blocking repair, is widely applied to large-scale crack and pit slot repair projects of structures such as dams, roads, basements and the like caused by external force or earthquake and other geological disasters, can be popularized and applied to areas with dynamic water flow, such as dam water flushing crack blocking repair and basement water seepage crack repair, and has wide engineering practice significance and application prospect.
17. The invention adopts the transparent resin and related equipment to test and simulate construction, so that the whole water-flowing plugging repair process is transparent, the theory is verified, defects are found, a good method suitable for construction is selected, the rationality of construction is verified in advance, and the test and the construction are combined, so that the construction effect is more remarkable.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a schematic view of an anti-overflow device according to the present invention.
FIG. 2 is a cross-sectional view of a grouting circular pipe according to the present invention.
Fig. 3 is a schematic diagram of circular tube grouting under the action of a magnetic field according to the present invention.
Fig. 4 is a schematic diagram of a secondary magnetic field generated by a flux linkage string according to the present invention.
FIG. 5 is a schematic diagram of a crack repair incorporating a flux linkage string according to the present invention.
Fig. 6 is a schematic illustration of the grouting of the anchor rod according to the present invention.
Figure 7 is a schematic view of the drainage of an anchor rod according to the present invention.
FIG. 8 is a schematic view of a water-cutting grouting of a magnetic cage according to the invention.
Fig. 9 is a schematic diagram of magnetic rod recovery according to the present invention.
In the figure: hole groove 1, overflow-preventing cover plate 2, convex groove 21, reserved round hole 22, bar magnet 3, electromagnet 4, first glass fiber sleeve 5, grouting round tube 6, grout outlet 7, magnetic particle channel 8, corrugated tube 81, film bag 82, steel tube 83, waste iron particles 9, zhong Ruzhuang magnetic chain 10, magnetic chain string 11, cylindrical steel ball 111, alloy steel wire rope 112, second glass fiber sleeve 12, tubular chute 121, water pumping tube 122, magnetic rod 13, buffer bag 14, grouting anchor 15, movable tube 151, sealing piston 152, grouting barrel 153, grouting water seepage hole 154, magnetic ring 155, water pumping channel 156, magnetic shielding cover 16, magnetic cage 17, iron cage 171, waste iron sheet 172 and stone 173.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-9, the equipment for plugging and repairing large cracks or pits by using water comprises a hole groove 1 arranged in a rock stratum, wherein an anti-overflow cover plate 2 is arranged at the top of the hole groove 1, a convex groove 21 is arranged on the anti-overflow cover plate 2, and a reserved round hole 22 is arranged on the convex groove 21; the grouting device comprises a bar magnet 3 with a reserved round hole in the center, an electromagnet 4, a first glass fiber sleeve 5 with the electromagnet prefabricated and a grouting round tube 6; the lower end of the grouting circular tube 6 is provided with a grouting hole 7, and a magnetic particle channel 8 is arranged in the grouting circular tube; comprising magnetized waste iron particles 9, zhong Ruzhuang flux 10 and flux strings 11; the grouting device comprises a second glass fiber sleeve 12, a magnetic rod 13, a buffering bag 14 and a grouting anchor rod 15; also included are a magnetic shield 16 and a magnetic cage 17. The equipment is mainly used for plugging and repairing large cracks and pits by utilizing the novel technology of magnetic mortar under the action of a magnetic field, the magnetic mortar is converged from the periphery to a magnetic source, the magnetic mortar is closely occluded to form a whole body tightly bonded with a hole wall, the filling effect of the hole groove is improved, meanwhile, the equipment has the function of plugging a water head, the purpose of forming a compact anchoring body in a large space range under a dynamic water condition to repair the large cracks and pits, the engineering durability is improved, and the equipment is widely applied to repairing engineering of large cracks and pits of structures such as dams, roads and basements caused by external force or geological disasters such as earthquakes, and has wide engineering practical significance and application prospect.
Further, the rock stratum is crushed in the hole groove 1, the surface of the hole groove is smooth, and the convex groove 21 of the overflow-preventing cover plate 2 is embedded into the hole groove 1 to be adjusted to the corresponding position and fixed. The anti-overflow cover plate aims to prevent slurry from overflowing, and can realize grouting repair of crack holes and grooves at different positions and angles. The convex groove 21 is used for embedding the hole groove, and placing the bar magnet, so that the upper part of the hole groove is filled densely, the filling porosity is reduced, and the influence of external water infiltration on the structural life of the repaired part is avoided. The round hole reserved on the overflow-preventing cover plate is used for fixing the position of a grouting pipe or a magnetic rod, and has the functions of exhausting and pressure relief when a crack is sequentially repaired by grouting. The grouting pressure is controlled during grouting of the grouting circular pipe, and the grouting circular pipe aims to control the magnetic mortar to be extruded and spread from inside to outside from a grouting hole to form a compact anchoring body, so that the penetration of outside air and water is avoided, and the durability of a repaired part is ensured.
Further, the first glass fiber sleeve 5 of the prefabricated electromagnet has certain strength, the bottom end is closed, the upper end is opened, the inner diameter of the first glass fiber sleeve is larger than the outer diameter of the electromagnet, lubricating oil is coated inside the first glass fiber sleeve, and the electromagnet is installed.
Further, the grouting circular tube 6 is made of glass fiber, a grouting hole 7 is reserved on the side wall of the lower end, the grouting circular tube has certain strength, the lower end is closed, the upper end is opened, the grouting speed is controlled by using high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, and a compact anchoring body is formed by extruding and diffusing from the grouting hole from inside to outside. The grouting circular tube is internally provided with the magnetic particle channels which are separated, and the grouting circular tube is characterized in that large-particle-diameter magnetic particles can be filled in during grouting, the large-particle-diameter magnetic particles can generate strong magnetic attraction outside, the formed clock-shaped emulsion magnetic chain can enlarge the influence range of magnetic fields between holes, so that the magnetic field intensity of the edge area close to the hole wall is increased, the magnetic mortar is bonded with the hole wall more closely, and the problem of non-closely filling slurry and separation of the hole wall is solved.
Further, the magnetic particle channel 8 is composed of a corrugated pipe 81, a membrane bag 82 filled with magnetorheological fluid and a steel pipe 83; the corrugated pipe 81 is connected to the far end of the membrane bag 82 and penetrates out from the slurry outlet 7 on the side wall of the grouting circular pipe 6; the membrane bag 82 filled with magnetorheological fluid is in a circular tube shape, the inside is a magnetic particle channel, the near end is connected with a steel tube, the membrane bag is in a T-shaped structure, the magnetorheological fluid in the membrane bag is reversible, the membrane bag is expanded to be in a circular tube shape and has high strength under the action of a magnetic field, and the membrane bag is in a fluid state after the magnetic field is withdrawn, so that the magnetic particle channel 8 can be pulled out from the upper end for recycling. The outside of the magnetic particle channel adopts a corrugated pipe, and the magnetic particle channel aims to drive the corrugated pipe to bend and deform under the action of magnetic field force, and the movement direction of the magnetic particle is consistent with the direction of a magnetic induction line. The lower end of the magnetic particle channel adopts a membrane bag filled with magnetorheological fluid, and the purpose is that when grouting is performed, an electromagnet is electrified to generate a magnetic field, the strength of the magnetorheological fluid is rapidly improved under the action of the magnetic field, and the channel is clamped and fixed in a grouting circular tube. The steel pipe in the magnetic particle channel adopts metal materials such as silicon steel with magnetism isolation, and its aim at silicon steel material separates magnetism effectually, avoids the magnetic particle of magnetization to let in the in-process with the mutual interference of magnetic field from inside.
Further, the waste iron particles 9 are formed into prismatic particles with different particle sizes by utilizing waste iron slag, the magnetic particles are divided into 2 mm-3 mm and 3 mm-5 mm according to the particle sizes, and the volume ratio is 3:7, according to the size of the opening diameter of the hole groove 1, the adopted magnetic particles refer to the proportion, the selected particle size is increased or decreased in multiple, and the particle size grading is good. The magnetic particles are magnetized by adopting waste iron particles, and the magnetic particles aim at low cost of waste iron, recycling and reutilizing waste, are green and environment-friendly, and most importantly, have large magnetization intensity of the waste iron and good engineering effect.
Further, the Zhong Ruzhuang flux linkage 10 is a pyramid-shaped cluster group with adsorptivity, the magnetic particles are adsorbed outside the first glass fiber sleeve 5 under the action of a magnetic field generated by the electromagnet, the closer to the electromagnet, the larger and denser the particle size of the adsorbed magnetic particles are, the pyramid-shaped cluster group formed by converging the magnetic particles can also generate a magnetic field, and the magnetic mortar is adsorbed on the surface to form Zhong Ruzhuang flux linkage.
Further, a hole channel is reserved in the center of the magnetic chain 11 by the magnetized cylindrical steel ball 111, the alloy steel wire rope 112 is long-chain through the chain, the alloy steel wire rope has good pulling resistance and tensile property, a certain length is reserved, hooks are connected to the two ends of the alloy steel wire rope, under different working conditions, the steel balls are replaced by waste spherical iron particles or magnetizable substances in different shapes of columnar iron blocks, and the size matched with the hole groove is selected. The magnetic linkage string can enlarge the influence range of the space magnetic field, so that the magnetic field intensity of a remote sub-crack area is increased, the magnetic mortar is more closely adhered to the hole wall, the slurry in the sub-crack can be fully filled, and the problems that the slurry is not closely filled and separated from the hole wall due to the weak magnetic field intensity and the weak magnetic field intensity are easily washed away are solved. The cylindrical steel ball is magnetized and then is strung by an alloy steel wire rope, the surface of the cylindrical steel ball is smooth and has no edges and corners, the magnetized N pole is connected with the N pole, the cylindrical steel ball is clamped in a gap of the sub-crack, the magnetization intensity is high, and the generated secondary magnetic field has the effect of increasing the original magnetic field and has good engineering effect. The alloy steel wire rope is reserved for a certain length, hooks are connected to the two ends of the alloy steel wire rope, the alloy steel wire rope is good in pulling-resistant and tensile properties, the reserved certain length can allow the magnetic chain string to bend and deform, and the hooks are connected to the two ends of the alloy steel wire rope to avoid the cylindrical steel ball from falling off the rope.
Further, the second glass fiber sleeve 12 has a certain strength, the bottom end is closed, the upper end is open, the inner diameter of the second glass fiber sleeve 12 is larger than the outer diameter of the magnetic rod, lubricating oil is coated in the second glass fiber sleeve, and the magnetic rod is filled in the second glass fiber sleeve; when the pit groove of underground running water and an underground well are involved, the second glass fiber sleeve 12 is provided with a tubular chute 121, and the water suction pipe 122 can move up and down in the chute to drain water; the glass fiber sleeve is used for isolating the magnetic slurry, protecting the magnetic rod and recovering the magnetic rod after the magnetic slurry is solidified. The glass fiber sleeve is provided with a tubular chute and a water suction pipe, and aims to drain water in time while grouting and reduce water pressure when the flowing water is much accumulated. The buffer bag between the glass fiber sleeve and the magnetic rod aims to aerate and clamp the magnetic rod, fix the position of the magnetic rod and have a certain buffer space.
Further, the magnetic rod 13 is placed into the second glass fiber sleeve 12, and the magnetic rod adopts a magnet which comprises a neodymium-iron-boron super-strong permanent magnet, a high-strength electromagnet and superconductivity and can generate strong magnetism;
further, the buffer bag 14 is an inflatable bag between the second glass fiber sleeve 12 and the magnetic rod 13, and plays a role in fixing and protecting the magnetic rod in the grouting construction process; when the construction is completed, partial gas is discharged when the magnetic rod is recovered, a magnetic shielding cover can be placed between the second glass fiber sleeve 12 and the magnetic rod 13, a strong magnetic field generated by the permanent magnet is shielded, and the magnetic rod and the magnetic shielding cover are taken out to complete recovery.
Further, the grouting anchor 15 includes a movable tube 151 in the middle, a sealing piston 152 is disposed at the lower end between the movable tube and the grouting tube 153, the outer tube is the grouting tube 153, grouting water seepage holes 154 are formed in the grouting tube 153, a magnetic ring 155 is sleeved outside the grouting tube, a cavity formed between the inner tube and the outer tube is a water pumping channel 156, and the two sides of the crack form an angle of 5-15 degrees with the horizontal plane direction, so as to perform grouting, and increase the connection strength between the repaired part and the original structure. The movable pipe and the sealing piston are arranged in the middle of the grouting anchor rod, and are used for forming a pumping channel with the outer grouting cylinder, water in the hole groove is extruded by grouting liquid and is positioned on the upper layer, and the water enters the pumping channel through a grouting water seepage hole at the upper part of the grouting cylinder and is pumped out of the groove; along with the increase of the slurry, the water level rises, the inner movable pipe is pulled outwards, part of water seepage holes are changed into grouting holes, grouting is completed in a circulating mode, and grouting and drainage are achieved.
Further, the magnetic shielding cover 16 has a certain strength, the bottom end is closed, the upper end is opened, the magnetic shielding cover 16 is cylindrical, the diameter of the magnetic shielding cover 16 is between the outer diameter of the magnetic rod and the inner diameter of the second glass fiber sleeve 12, and the magnetic shielding cover is made of a metal material with a magnetism isolating effect; the magnetic shielding cover is used for isolating a magnetic field, avoiding the magnetic rod recovery difficulty caused by overlarge pulling-out resistance because strong magnetic rods generate strong adsorption force to the magnetic slurry filled in the groove, and avoiding the damage of the internal plugging repair structure caused by forced pulling-out of the magnetic field force.
Further, the magnetic cage 17 is composed of an iron cage 171 surrounded by an iron net, a waste iron sheet 172 and a stone 173, a plurality of magnetic cages are fastened on an iron chain, and the sizes of the magnetic cages are adjusted according to the sizes of the hole slots; the iron cage 171 is a cage-like structure formed by processing cross-shaped grids; the waste iron sheet 172 is filled in the outer ring layer, and after magnetization, has strong magnetism and can drive the magnetic cage 17 to converge towards the magnetic rod 13; the stone 173 is clamped on the inner ring layer in the middle of the magnetic cage, so that the gravity of the magnetic cage is increased, the volume is large, and the water blocking cost is low. The magnetic cage can be used for plugging water by utilizing the characteristics of large volume and heavy weight, has a magnetic expansion effect, increases the agglomeration adsorption force on slurry, fills the pores among the magnetic cages, and effectively extrudes the pores in water to realize the plugging of moving water. The magnetic cages are fastened on the iron chain, so that the gravity can be increased, and the passive water is prevented from being excessively dispersed. The outer ring layer in the magnetic cage adopts the abandonment to dash lace iron charge, and its aim at prevents that the particle diameter of inner ring layer from spilling slightly little stone, and the extrusion of abandonment iron sheet iron piece lets the magnetic field intensity on magnetic cage surface bigger at the outer ring layer, and is stronger to magnetic mortar's adsorption affinity.
Example 2:
the method for plugging and repairing the large-sized cracks or pit slots by adopting the equipment for plugging and repairing the large-sized cracks or pit slots by using the water, the cracks and the pit slots are detected, the large-sized cracks or pit slots are searched by an ultrasonic detector, the parameters of trend, width, length and depth and the development degree of crack root systems are determined by utilizing ultrasonic reflection, and when the large-sized main cracks are the main ones, the method comprises the following construction steps:
Step1.1, material preparation: the overflow-preventing cover plate 2 is provided with a reserved round hole 22 on a convex groove 21 of the overflow-preventing cover plate 2, a bar magnet 3 with a reserved round hole in the center, a first glass fiber sleeve 5 with an electromagnet in advance, a grouting circular tube 6, a grouting hole 7 at the lower end of the grouting circular tube 6, a magnetic particle channel 8 in the grouting circular tube, wherein the channel 8 consists of a corrugated tube 81, a film bag 82 filled with magnetorheological fluid and a steel tube 83, and magnetized waste iron particles 9 and Zhong Ruzhuang magnetic chains 10;
step1.2, hole groove cleaning: flattening the outer surface of the hole groove 1, cleaning the broken rock stratum on the inner surface layer of the groove, cleaning the hole groove 1 by wind pressure or a steel wire brush, wherein the hole groove 1 is free of mud and dirt and particles, and the hole groove 1 is a U-shaped convex groove;
step1.3, fixing an overflow-proof cover plate 2: according to the trend of the hole grooves, arranging an anti-overflow cover plate 2 in a seam-riding way from bottom to top and from left to right, embedding a convex groove 21 of the anti-overflow cover plate 2 into the hole grooves, and inserting a grouting pipe into a round hole reserved in the middle of the convex groove of the cover plate after fixing the position of the cover plate;
step1.4, bar magnet 3 and electromagnet 4 position arrangement: the strip magnets are sealed and put into the convex grooves of the cover plate, and then a cylindrical electromagnet 4 is put into a first glass fiber sleeve 5 of the outer ring of the grouting pipe;
step1.5, preparing filling mortar and waste iron slag particles: iron powder, an expanding agent and an epoxy resin material are added into mortar according to a certain proportion to prepare magnetic mortar, the performance of the magnetic mortar is tested, normal use of the magnetic mortar in a filling stage is ensured, the waste iron slag is utilized to shape prismatic particles with different particle diameters, the magnetic particles are separated into 2 mm-3 mm and 3 mm-5 mm according to the particle diameters through screening, and the volume ratio is 3:7, according to the size of the opening diameter of the hole slot, the adopted magnetic particles can refer to the proportion thereof, the selected particle size can be increased or decreased in multiple, and the particle size grading is good;
Step1.6, injecting magnetized waste iron particles and magnetic mortar: the magnetized iron-containing particles are injected into a magnetic particle channel in a grouting circular tube, the magnetic particles are adsorbed outside the first glass fiber sleeve 5 under the action of a magnetic field generated by an electromagnet, the closer to the electromagnet, the larger and denser the particle size of the adsorbed magnetic particles are, the pyramid-shaped clusters formed by the convergence of the magnetic particles can generate a magnetic field, and the magnetic particles have adsorption force on magnetic mortar; the magnetic mortar is placed into grouting equipment, and is sequentially injected into grouting round pipes from bottom to top and from left to right, the speed is controlled by using high-pressure grouting equipment, the grouting pressure of the magnetic mortar can overcome the magnetic field suction force, and the grouting pressure is extruded and diffused from the inside to the outside from a grouting hole to form a compact anchoring body;
step1.7, surface repair: after the magnetic particles are injected, the demagnetizing pulls out the magnetic particle channel from the upper end of the grouting circular tube 6, after the slurry is solidified to a certain degree, the electromagnet is powered off and demagnetized, the strip magnet, the overflow-preventing cover plate and the electromagnet are removed in sequence and recycled, and the magnetic mortar is adopted to seal the inside of the first glass fiber sleeve 5 and the convex groove;
example 3:
when water exists in the hole groove and wading is carried out, sub cracks are developed and structural reinforcement blocking is carried out, and the method comprises the following construction steps:
Step2.1, material preparation: the overflow-preventing cover plate 2, a reserved round hole 22 is arranged on a convex groove 21 of the overflow-preventing cover plate 2, a strip magnet 3 with a round hole reserved in the center and a magnetic chain 11 are arranged on the convex groove, the magnetic chain 11 is formed by a cylindrical steel ball 111 in a series mode through an alloy steel wire rope 112, a second glass fiber sleeve 12 is arranged on the sleeve 12, a tubular chute 121, a water pumping pipe 122, a magnetic rod 13, a buffer bag 14 and a grouting anchor rod 15 are arranged on the sleeve 12, and the grouting anchor rod 15 comprises a movable pipe 151 in the middle, a sealing piston 152, a grouting barrel 153, a grouting water seepage hole 154, a magnetic ring 155, a water pumping channel 156 and a magnetic shielding cover 16;
step2.2, flux linkage preparation: according to the width of the crack, cylindrical steel balls with proper sizes are selected to magnetize, N is connected with N poles, and an alloy steel wire rope is used for forming a flux linkage;
step2.3, hole groove cleaning: flattening the outer surface of the hole groove, cleaning the broken rock stratum on the inner surface layer of the groove, and cleaning the hole groove by wind pressure or a steel wire brush;
step2.4, fixing an overflow-proof cover plate: firstly, putting the prepared magnetic chain into a slot crack, arranging an anti-overflow cover plate in a seam from bottom to top according to the trend of the slot, embedding a convex groove of the anti-overflow cover plate into the slot, and fixing the position of the cover plate;
step2.5, bar magnet and bar magnet arrangement: the strip-shaped magnet is sealed and placed in a convex groove of the cover plate, then a cylindrical strong magnetic rod is placed in the second glass fiber sleeve 12, an air bag in the second glass fiber sleeve 12 is inflated, the position of the magnetic rod is fixed, then the strip-shaped magnet is integrally placed in a round hole reserved in the middle of the convex groove of the cover plate, and one end of a magnetic chain is connected with the magnetic rod under the adsorption force of the magnetic rod;
Step2.6, grouting and drainage support of the anchor rod: the construction is reinforced, the two sides of the hole groove are staggered, the anchor rod is drilled and grouting is carried out, the speed is controlled by utilizing high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, compact anchor bodies are formed by extruding and diffusing from inside to outside from the grouting hole, when the construction is carried out in the water moving hole groove, water is pumped out through the grouting water seepage hole at the upper part through the water pumping channel, along with the increase of grouting, the grouting liquid enters the water pumping channel from the water seepage hole and is sunk on the sealing piston, the sealing piston pressure is increased, the movable pipe in the middle is gradually pulled outwards, and the grouting is completed in a circulating manner; under the action of a magnetic field, the magnetic mortar is tightly adsorbed on the periphery of the magnetic rod, the magnetic flux linkage is added to enlarge the influence range of the magnetic field, the long and narrow gap can be enhanced under the action of the magnetic field, and the filled magnetic mortar is more compact;
step2.7, surface repair: after the slurry is solidified, deflating an air bag in the sleeve, sleeving a magnetic shielding cover outside a magnetic rod from top to bottom, taking out and recycling a shielding magnetic field, removing the strip-shaped magnet in sequence without recycling the second glass fiber sleeve 12, and sealing the inside of the second glass fiber sleeve 12 and the convex groove by adopting magnetic slurry;
Example 4:
when the underground mine is involved, the large underground excavated hole groove is internally provided with movable water flow and water burst blocking, and the method comprises the following construction steps:
step3.1, material preparation: the overflow-preventing cover plate 2 is provided with a reserved round hole 22 on a convex groove 21 of the overflow-preventing cover plate 2, a strip magnet 3 with a reserved round hole in the center, a second glass fiber sleeve 12, a tubular chute 121, a water pumping pipe 122, a magnetic rod 13, a buffer bag 14 and a grouting anchor rod 15, wherein the grouting anchor rod 15 comprises a movable pipe 151 in the middle, a sealing piston 152, a grouting barrel 153, a grouting water seepage hole 154, a magnetic ring 155, a water pumping channel 156, a magnetic shielding cover 16 and a magnetic cage 17, and the magnetic cage 17 consists of an iron cage 171, a waste iron sheet 172 and a stone 173 which are surrounded by an iron net;
step3.2, preparing a water shutoff magnetic cage: according to the width of the hole slot, a magnetic cage with a proper size range is formulated, an iron net is welded into an iron cage, waste iron blocks and waste lace iron materials are filled in an inner outer ring layer, stone blocks are filled in an inner ring layer, and the gravity and the volume are utilized to block flowing water flow;
step3.3, fixing an overflow-proof cover plate: a plurality of prepared water blocking magnetic cages are fastened on an iron chain and put into a target area, an anti-overflow cover plate is arranged above a hole groove of a target water blocking position, a convex groove of the anti-overflow cover plate is embedded in the hole groove, and the position of the cover plate is fixed;
Step3.4, bar magnet and bar magnet arrangement: the strip-shaped magnet is sealed and placed in a convex groove of a cover plate, then a cylindrical strong magnetic rod is placed in a cylindrical second glass fiber sleeve 12, an air bag in the second glass fiber sleeve 12 is inflated, the position of the magnetic rod is fixed, then the magnetic rod is integrally placed in a round hole reserved in the middle of the convex groove of the cover plate, the magnetic water shutoff cages are discretely distributed on the accessories of a target water shutoff area, and under the action of magnetic field force, waste iron sheets and iron nets in the magnetic cages are magnetized and are tightly adsorbed on the magnetic rod to be gathered together to form a water shutoff block with a larger volume;
step3.5, grouting and drainage plugging: the speed is controlled by using high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, compact anchoring bodies are formed by extruding and diffusing from inside to outside from a grouting hole, when the grouting equipment is used for construction in a water moving hole groove, water is pumped out through a grouting water seepage hole at the upper part and a water pumping channel, along with the increase of grouting, slurry enters the water pumping channel from the water seepage hole and is deposited on a sealing piston, the sealing piston pressure is increased, a movable piston tube in the middle is gradually pulled outwards, and grouting is completed in a circulating manner; under the action of a magnetic field, the magnetic mortar is tightly adsorbed on the periphery of the magnetic rod, and meanwhile, the water shutoff magnetic cage also has strong magnetism, so that the influence range of the magnetic field is enlarged by adding the magnetic cage, the magnetic mortar is tightly adsorbed, and the water head can be plugged; the second glass fiber sleeve 12 is reserved with a tubular chute, and a water suction pipe can be pulled in the chute to assist the anchor rod to discharge water in the hole groove together;
Step3.6, surface repair: after pumping water, sliding a water pumping pipe out of a chute, deflating an air bag in the second glass fiber sleeve 12 after the slurry is solidified, sleeving a magnetic shielding cover outside a magnetic rod from top to bottom, taking out and recycling a shielding magnetic field, removing a bar magnet and an anti-overflow cover plate in sequence from the second glass fiber sleeve 12 without recycling the shielding magnetic field, and plugging the second glass fiber sleeve 12 and the convex groove by adopting magnetic mortar;
example 5:
the ultrasonic detector is used for detecting the large-scale cracks or pits, and the method comprises the following testing steps:
step1, manufacturing a reality simulation model: simulating cracks with different pore widths, depths, trends, roughness and tortuosity of pore channels by using a transparent resin casting model, and constructing pit slots under moving water;
step2, simulating a construction flow: according to actual working conditions, selecting Step1.1-Step1.7, step2.1-Step2.7 or Step2.1-Step2.7 according to a proportion to perform plugging grouting simulation;
step3, performance test: the whole grouting plugging test simulation process is recorded by a camera, the process of plugging and filling magnetic mortar is recorded, how the water film and gas of a repairing interface are discharged by slurry is observed, and a rule is searched; after the flux linkage and the magnetic cage are added, measuring the magnetic attraction value at the edge of the crack, and observing the filling condition of the interface and whether the interface can resist moving water; measuring the flowing water flow rate through a flow rate measuring instrument, measuring the application range, and observing the position of a damaged interface;
Step4, optimization test: and adjusting the test scheme, and taking remedial measures in advance for the predicted damage interface, and verifying whether the construction is reasonable in advance through visual simulation test.
Claims (10)
1. The equipment for plugging and repairing the large-scale cracks or pit slots by using water is characterized by comprising a hole slot (1) arranged in a rock stratum, wherein an anti-overflow cover plate (2) is arranged at the top of the hole slot (1), a convex slot (21) is arranged on the anti-overflow cover plate (2), and a reserved round hole (22) is arranged on the convex slot (21); the grouting device comprises a strip magnet (3) with a reserved round hole in the center, an electromagnet (4), a first glass fiber sleeve (5) with the electromagnet and a grouting round tube (6); the lower end of the grouting circular tube (6) is provided with a grouting hole (7), and a magnetic particle channel (8) is arranged in the grouting circular tube; comprises magnetized waste iron particles (9), zhong Ruzhuang flux linkages (10) and flux linkage strings (11); comprises a second glass fiber sleeve (12), a magnetic rod (13), a buffer bag (14) and a grouting anchor rod (15); also comprises a magnetic shielding cover (16) and a magnetic cage (17).
2. The apparatus for plugging and repairing a large crack or pit in water according to claim 1, wherein: the rock stratum is crushed in the clearance hole groove (1), the surface of the hole groove is smooth, and the convex groove (21) of the overflow-preventing cover plate (2) is embedded into the hole groove (1) to be adjusted to the corresponding position and fixed.
3. The apparatus for plugging and repairing a large crack or pit in water according to claim 1, wherein: the first glass fiber sleeve (5) of the prefabricated electromagnet has certain strength, the bottom end is closed, the upper end is opened, the inner diameter of the first glass fiber sleeve is larger than the outer diameter of the electromagnet, lubricating oil is coated in the first glass fiber sleeve, and the electromagnet is arranged in the first glass fiber sleeve;
the grouting circular tube (6) is made of glass fiber, a grouting hole (7) is reserved on the side wall of the lower end, the grouting circular tube has certain strength, the lower end is closed, the upper end is opened, the grouting speed is controlled by high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, and a compact anchoring body is formed by extruding and diffusing from the grouting hole from inside to outside.
4. The apparatus for plugging and repairing a large crack or pit in water according to claim 1, wherein: the magnetic particle channel (8) consists of a corrugated pipe (81), a membrane bag (82) filled with magnetorheological fluid and a steel pipe (83); the corrugated pipe (81) is connected to the far end of the film bag (82) and penetrates out of the slurry outlet hole (7) on the side wall of the grouting circular pipe (6); the membrane bag (82) filled with magnetorheological fluid is in a circular tube shape, the inside of the membrane bag is provided with a magnetic particle channel, the near end of the membrane bag is connected with a steel tube, the membrane bag is in a T-shaped structure, the magnetorheological fluid in the membrane bag is reversible, the membrane bag is expanded to be in a circular tube shape under the action of a magnetic field, the membrane bag has high strength, the membrane bag is in a fluid state after the magnetic field is withdrawn, and the magnetic particle channel (8) can be pulled out from the upper end for recycling.
5. The apparatus for plugging and repairing a large crack or pit in water according to claim 1, wherein: the waste iron particles (9) are formed into prismatic particles with different particle sizes by utilizing waste iron slag, the magnetic particles are divided into 2 mm-3 mm and 3 mm-5 mm according to the particle sizes, and the volume ratio is 3:7, according to the size of the opening of the hole groove (1), the adopted magnetic particles refer to the proportion, the selected particle size is increased or decreased in multiple, and the particle size grading is good.
6. The apparatus for plugging and repairing a large crack or pit in water according to claim 1, wherein: the Zhong Ruzhuang flux linkage (10) is a pyramid-shaped cluster with adsorptivity, magnetic particles are adsorbed outside the first glass fiber sleeve (5) under the action of a magnetic field generated by an electromagnet, the closer to the electromagnet, the larger and denser the particle size of the adsorbed magnetic particles are, the pyramid-shaped cluster formed by converging the magnetic particles can also generate a magnetic field, and the magnetic mortar is adsorbed on the surface to form Zhong Ruzhuang flux linkage;
the magnetic chain string (11) is characterized in that a hole channel is reserved in the center of a magnetized cylindrical steel ball (111), an alloy steel wire rope (112) is formed by a long chain in a strung mode, the alloy steel wire rope has good pulling resistance and tensile property, a certain length is reserved, hooks are connected to the two ends of the alloy steel wire rope, under different working conditions, the steel balls are replaced by waste spherical iron particles or magnetizable substances in different shapes of columnar iron blocks, and the size matched with the hole groove is selected.
7. The apparatus for plugging and repairing a large crack or pit in water according to claim 1, wherein: the second glass fiber sleeve (12) has certain strength, the bottom end is closed, the upper end is open, the inner diameter of the second glass fiber sleeve (12) is larger than the outer diameter of the magnetic rod, lubricating oil is coated in the second glass fiber sleeve, and the magnetic rod is filled in the second glass fiber sleeve; when the pit groove and the underground well of underground running water are involved, the second glass fiber sleeve (12) is provided with a tubular chute (121), and the water suction pipe (122) can move up and down in the chute to drain water;
the magnetic rod (13) is placed in the second glass fiber sleeve (12) and adopts a magnet which comprises a neodymium-iron-boron super-strong permanent magnet, a high-strength electromagnet and superconductivity and can generate strong magnetism;
the buffer bag (14) is an inflatable bag between the second glass fiber sleeve (12) and the magnetic rod (13), and plays a role in fixing and protecting the magnetic rod in the grouting construction process; when the construction is completed, partial gas is discharged when the magnetic rod is recovered, a magnetic shielding cover can be placed between the second glass fiber sleeve (12) and the magnetic rod (13), a strong magnetic field generated by the permanent magnet is shielded, and the magnetic rod and the magnetic shielding cover are taken out to complete recovery.
8. The apparatus for plugging and repairing a large crack or pit in water according to claim 1, wherein: the grouting anchor rod (15) comprises a movable pipe (151) in the middle, a sealing piston (152) is arranged at the lower end between the movable pipe and a grouting barrel (153), an outer pipe is the grouting barrel (153), grouting water seepage holes (154) are formed in the grouting barrel (153), a magnetic ring (155) is sleeved outside the grouting barrel, a cavity formed between the inner pipe and the outer pipe is a water pumping channel (156), and the two sides of a crack and the horizontal plane direction form an included angle of 5-15 degrees, so that grouting is performed in a hole slot in a staggered manner, and the connection strength between a repaired part and an original structure is increased.
9. The apparatus for plugging and repairing a large crack or pit in water as defined in claim 7, wherein: the magnetic shielding cover (16) has certain strength, the bottom end is closed, the upper end is opened, the magnetic shielding cover is cylindrical, the diameter of the magnetic shielding cover (16) is between the outer diameter of the magnetic rod and the inner diameter of the second glass fiber sleeve (12), and the magnetic shielding cover is made of a metal material with a magnetism isolating effect;
the magnetic cage (17) consists of an iron cage (171) surrounded by an iron net, a waste iron sheet (172) and stone blocks (173), a plurality of magnetic cages are fastened on an iron chain, and the sizes of the magnetic cages are adjusted according to the sizes of the holes and the grooves; the iron cage (171) is a cage-shaped structure formed by processing cross grids; the waste iron sheet (172) is filled in the outer ring layer, and after magnetization, has strong magnetism, and can drive the magnetic cage (17) to converge towards the magnetic rod (13); the stone (173) is clamped on the inner ring layer in the middle of the magnetic cage, so that the gravity of the magnetic cage is increased, the volume is large, and the water blocking cost is low.
10. A method for plugging and repairing a large-scale crack or pit by using the equipment for plugging and repairing a water flowing in the pit according to any one of claims 1 to 9, which is characterized in that: crack and pit detection, the ultrasonic detector is used for detecting the large-sized crack or pit, ultrasonic reflection is utilized for determining trend, width, length, depth parameters and crack root system development degree, and when the large-sized main crack is the main part, the method comprises the following construction steps:
Step1.1, material preparation: the anti-overflow cover plate (2), the convex groove (21) of the anti-overflow cover plate (2) is provided with a reserved round hole (22), the center of the bar-shaped magnet (3) is reserved with a round hole, a first glass fiber sleeve (5) of the electromagnet is prefabricated, the grouting circular tube (6) is provided with a grouting hole (7) at the lower end, a magnetic particle channel (8) is arranged in the grouting circular tube, the channel (8) is composed of a corrugated pipe (81), a membrane bag (82) filled with magnetorheological fluid and a steel pipe (83), and magnetized waste iron particles (9) and Zhong Ruzhuang magnetic chains (10);
step1.2, hole groove cleaning: leveling the outer surface of the hole groove (1), cleaning the broken rock stratum on the inner surface layer of the groove, cleaning the hole groove (1) through wind pressure or a steel wire brush, wherein no mud dirt and no particles exist in the hole groove (1), and the hole groove (1) is a U-shaped convex groove in general;
step1.3, fixing an overflow-proof cover plate (2): according to the trend of the hole grooves, arranging an anti-overflow cover plate (2) in a seam-crossing manner from bottom to top, embedding a convex groove (21) of the anti-overflow cover plate (2) into the hole grooves, and inserting a grouting pipe into a round hole reserved in the middle of the convex groove of the cover plate after fixing the position of the cover plate;
step1.4, the positions of the bar magnet (3) and the electromagnet (4) are arranged: the strip magnets are sealed and put into the convex grooves of the cover plate, and then a cylindrical electromagnet (4) is put into a first glass fiber sleeve (5) of the outer ring of the grouting pipe;
Step1.5, preparing filling mortar and waste iron slag particles: iron powder, an expanding agent and an epoxy resin material are added into mortar according to a certain proportion to prepare magnetic mortar, the performance of the magnetic mortar is tested, normal use of the magnetic mortar in a filling stage is ensured, the waste iron slag is utilized to shape prismatic particles with different particle diameters, the magnetic particles are separated into 2 mm-3 mm and 3 mm-5 mm according to the particle diameters through screening, and the volume ratio is 3:7, according to the size of the opening diameter of the hole slot, the adopted magnetic particles can refer to the proportion thereof, the selected particle size can be increased or decreased in multiple, and the particle size grading is good;
step1.6, injecting magnetized waste iron particles and magnetic mortar: the magnetized iron-containing particles are injected into a magnetic particle channel in a grouting circular tube, the magnetic particles are adsorbed outside a first glass fiber sleeve (5) under the action of a magnetic field generated by an electromagnet, the closer to the electromagnet, the larger and denser the particle size of the adsorbed magnetic particles are, the pyramid-shaped clusters formed by the convergence of the magnetic particles can also generate the magnetic field, and the adsorption force on the magnetic mortar is realized; the magnetic mortar is placed into grouting equipment, and is sequentially injected into grouting round pipes from bottom to top and from left to right, the speed is controlled by using high-pressure grouting equipment, the grouting pressure of the magnetic mortar can overcome the magnetic field suction force, and the grouting pressure is extruded and diffused from the inside to the outside from a grouting hole to form a compact anchoring body;
Step1.7, surface repair: after the magnetic particles are injected, the demagnetizing pulls out the magnetic particle channel from the upper end of the grouting circular tube (6), after the slurry is solidified to a certain degree, the electromagnet is powered off and demagnetized, the strip magnet, the overflow-preventing cover plate and the electromagnet are removed in sequence and recycled, and the magnetic mortar is adopted to seal the inside of the first glass fiber sleeve (5) and the convex groove;
when water exists in the hole groove and wading is carried out, sub cracks are developed and structural reinforcement blocking is carried out, and the method comprises the following construction steps:
step2.1, material preparation: the anti-overflow cover plate (2), the convex groove (21) of the anti-overflow cover plate (2) is provided with a reserved round hole (22), the center of the anti-overflow cover plate is provided with a strip magnet (3) with a reserved round hole, the magnetic chain is connected with a magnetic chain string (11), the magnetic chain string (11) is formed by connecting cylindrical steel balls (111) with an alloy steel wire rope (112), a second glass fiber sleeve (12), a tubular chute (121) and a water pumping pipe (122) are arranged on the sleeve (12), a magnetic rod (13) is arranged on the sleeve, a buffer bag (14) and a grouting anchor rod (15), and the grouting anchor rod (15) comprises a movable pipe (151), a sealing piston (152), a grouting cylinder (153), a grouting water seepage hole (154), a magnetic ring (155), a water pumping channel (156) and a magnetic shielding cover (16);
Step2.2, flux linkage preparation: according to the width of the crack, cylindrical steel balls with proper sizes are selected to magnetize, N is connected with N poles, and an alloy steel wire rope is used for forming a flux linkage;
step2.3, hole groove cleaning: flattening the outer surface of the hole groove, cleaning the broken rock stratum on the inner surface layer of the groove, and cleaning the hole groove by wind pressure or a steel wire brush;
step2.4, fixing an overflow-proof cover plate: firstly, putting the prepared magnetic chain into a slot crack, arranging an anti-overflow cover plate in a seam from bottom to top according to the trend of the slot, embedding a convex groove of the anti-overflow cover plate into the slot, and fixing the position of the cover plate;
step2.5, bar magnet and bar magnet arrangement: the strip-shaped magnet is sealed and placed in a convex groove of the cover plate, then a cylindrical strong magnetic rod is placed in a second glass fiber sleeve (12), an air bag in the second glass fiber sleeve (12) is inflated, the position of the magnetic rod is fixed, then the strip-shaped magnet is integrally placed in a round hole reserved in the middle of the convex groove of the cover plate, and one end of a magnetic chain is connected with the magnetic rod under the adsorption force of the magnetic rod;
step2.6, grouting and drainage support of the anchor rod: the construction is reinforced, the two sides of the hole groove are staggered, the anchor rod is drilled and grouting is carried out, the speed is controlled by utilizing high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, compact anchor bodies are formed by extruding and diffusing from inside to outside from the grouting hole, when the construction is carried out in the water moving hole groove, water is pumped out through the grouting water seepage hole at the upper part through the water pumping channel, along with the increase of grouting, the grouting liquid enters the water pumping channel from the water seepage hole and is sunk on the sealing piston, the sealing piston pressure is increased, the movable pipe in the middle is gradually pulled outwards, and the grouting is completed in a circulating manner; under the action of a magnetic field, the magnetic mortar is tightly adsorbed on the periphery of the magnetic rod, the magnetic flux linkage is added to enlarge the influence range of the magnetic field, the long and narrow gap can be enhanced under the action of the magnetic field, and the filled magnetic mortar is more compact;
Step2.7, surface repair: after the slurry is solidified, deflating an air bag in the sleeve, sleeving a magnetic shielding cover outside the magnetic rod from top to bottom, taking out and recycling a shielding magnetic field, removing the strip-shaped magnet in sequence without recycling the second glass fiber sleeve (12), and sealing the inner part and the convex groove of the second glass fiber sleeve (12) by adopting magnetic mortar;
when the underground mine is involved, the large underground excavated hole groove is internally provided with movable water flow and water burst blocking, and the method comprises the following construction steps:
step3.1, material preparation: the anti-overflow cover plate (2), the convex groove (21) of the anti-overflow cover plate (2) is provided with a reserved round hole (22), the center of the bar-shaped magnet (3) is reserved with a round hole, the sleeve (12) is provided with a tubular chute (121), a water pumping pipe (122), a magnetic rod (13) and a buffering bag (14) and a grouting anchor rod (15), the grouting anchor rod (15) comprises a movable pipe (151), a sealing piston (152), a grouting barrel (153), a grouting water seepage hole (154), a magnetic ring (155), a water pumping channel (156), a magnetic shielding cover (16) and a magnetic cage (17), and the magnetic cage (17) consists of an iron cage (171), a waste iron sheet (172) and a stone (173) which are surrounded by an iron net;
Step3.2, preparing a water shutoff magnetic cage: according to the width of the hole slot, a magnetic cage with a proper size range is formulated, an iron net is welded into an iron cage, waste iron blocks and waste lace iron materials are filled in an inner outer ring layer, stone blocks are filled in an inner ring layer, and the gravity and the volume are utilized to block flowing water flow;
step3.3, fixing an overflow-proof cover plate: a plurality of prepared water blocking magnetic cages are fastened on an iron chain and put into a target area, an anti-overflow cover plate is arranged above a hole groove of a target water blocking position, a convex groove of the anti-overflow cover plate is embedded in the hole groove, and the position of the cover plate is fixed;
step3.4, bar magnet and bar magnet arrangement: the strip-shaped magnet is sealed and placed in a convex groove of a cover plate, then a cylindrical strong magnetic rod is placed in a cylindrical second glass fiber sleeve (12), an air bag in the second glass fiber sleeve (12) is inflated, the position of the magnetic rod is fixed, then the air bag is integrally placed in a round hole reserved in the middle of the convex groove of the cover plate, the water blocking magnetic cages are discretely distributed on the accessory of a target water blocking area, and under the action of magnetic force, waste iron sheets and iron nets in the magnetic cages are magnetized and are tightly adsorbed on the magnetic rod to be gathered together to form a water blocking block with a larger volume;
step3.5, grouting and drainage plugging: the speed is controlled by using high-pressure grouting equipment, the magnetic mortar grouting pressure can overcome the magnetic field suction force, compact anchoring bodies are formed by extruding and diffusing from inside to outside from a grouting hole, when the grouting equipment is used for construction in a water moving hole groove, water is pumped out through a grouting water seepage hole at the upper part and a water pumping channel, along with the increase of grouting, slurry enters the water pumping channel from the water seepage hole and is deposited on a sealing piston, the sealing piston pressure is increased, a movable piston tube in the middle is gradually pulled outwards, and grouting is completed in a circulating manner; under the action of a magnetic field, the magnetic mortar is tightly adsorbed on the periphery of the magnetic rod, and meanwhile, the water shutoff magnetic cage also has strong magnetism, so that the influence range of the magnetic field is enlarged by adding the magnetic cage, the magnetic mortar is tightly adsorbed, and the water head can be plugged; a tubular chute is reserved in the second glass fiber sleeve (12), and a water suction pipe can be pulled in the chute to assist the anchor rod to discharge water in the hole groove together;
Step3.6, surface repair: after pumping water, sliding a water pumping pipe out of a chute, deflating an air bag in a second glass fiber sleeve (12) after the slurry is solidified, sleeving a magnetic shielding cover outside a magnetic rod from top to bottom, taking out and recycling a shielding magnetic field, removing a bar magnet and an anti-overflow cover plate in sequence from the second glass fiber sleeve (12), and performing plugging treatment on the second glass fiber sleeve (12) and the convex groove by adopting magnetic mortar;
the ultrasonic detector is used for detecting the large-scale cracks or pits, and the method comprises the following testing steps:
step1, manufacturing a reality simulation model: simulating cracks with different pore widths, depths, trends, roughness and tortuosity of pore channels by using a transparent resin casting model, and constructing pit slots under moving water;
step2, simulating a construction flow: according to actual working conditions, selecting Step1.1-Step1.7, step2.1-Step2.7 or Step2.1-Step2.7 according to a proportion to perform plugging grouting simulation;
step3, performance test: the whole grouting plugging test simulation process is recorded by a camera, the process of plugging and filling magnetic mortar is recorded, how the water film and gas of a repairing interface are discharged by slurry is observed, and a rule is searched; after the flux linkage and the magnetic cage are added, measuring the magnetic attraction value at the edge of the crack, and observing the filling condition of the interface and whether the interface can resist moving water; measuring the flowing water flow rate through a flow rate measuring instrument, measuring the application range, and observing the position of a damaged interface;
Step4, optimization test: and adjusting the test scheme, and taking remedial measures in advance for the predicted damage interface, and verifying whether the construction is reasonable in advance through visual simulation test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311005805.0A CN117266250A (en) | 2023-08-10 | 2023-08-10 | Device and method for plugging and repairing large-scale cracks or pit slots by running water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118008198A (en) * | 2024-04-09 | 2024-05-10 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Water stopping device for geological water pumping test |
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- 2023-08-10 CN CN202311005805.0A patent/CN117266250A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118008198A (en) * | 2024-04-09 | 2024-05-10 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Water stopping device for geological water pumping test |
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