Roller type cut-off wall grooving grouting equipment with side edge baffle and construction method
Technical Field
The invention relates to the technical field of diaphragm wall construction, in particular to a roller type diaphragm wall grooving grouting device with a lateral edge baffle and a construction method.
Background
The drilling and grooving method adopted in the existing diaphragm wall construction mainly comprises the following steps:
(1) a drilling and splitting method; is generally applicable to common sandy cobblestone strata. Two adjacent groove sections of the wall axis are constructed in batches in a first period and a second period (or a front period and a rear period) by using a steel rope impact drilling machine or an impact type reverse circulation drilling machine, holes are drilled according to a main-auxiliary relation, a splitting auxiliary hole is drilled after two adjacent main holes are drilled into a certain depth, and then the stone slag split by the drill is stored and taken out of the hole.
(2) Drilling and grabbing; the method is suitable for digging deeper slotted holes in tight stratum, adopts the combination of percussion drilling and grab bucket method to carry out construction, drills main holes on a stone layer and bedrock by using percussion drilling, and grabs auxiliary holes between two adjacent main holes by using grab bucket. Depending on the size of the slotted hole to be cut, two-drill one-grab or three-drill two-grab can be generally adopted.
(3) Grasping; the method is suitable for building the concrete upper impervious wall in a sand-gravel layer or a powder-seven layer, and a grab bucket method is adopted to directly dig the slotted hole, so that the working efficiency can be greatly improved.
However, drilling equipment used in the drilling splitting method and the drilling grabbing method may cause a large hole slope rate in the grooving construction process, the hole slope rate is a hard index for strictly controlling the quality in the slotted hole excavation process, the hole slope rate can cause that the overlapping thickness of each part of the slotted hole is not enough, so that the impervious wall is distorted or weak, and the geological condition of the grabbing method construction has strong limitation.
Disclosure of Invention
The invention provides a roller type cut-off wall grooving grouting device with a side edge baffle and a construction method, aiming at solving the technical problems that holes are easy to form inclined holes when holes are drilled, the geological conditions of construction have strong limitations and the like in the prior art.
The invention is realized by the following technical scheme:
a roller type cut-off wall grooving grouting device with side edge baffles comprises a bottom plate, wherein the lower bottom surface of the bottom plate is rotatably connected with two groups of rolling rollers which are arranged side by side, a group of rolling rollers is respectively arranged in front and at the back along the advancing direction of the device, and each rolling roller is provided with a plurality of olecranon-shaped blades;
the front end and the rear end of the bottom plate are respectively connected with an inverted triangular baffle plate, the baffle plates are arranged vertically downwards, the upper bottom surface and the lower bottom surface penetrating through the bottom plate are connected with a hollow metal pipe, the hollow metal pipe is positioned between the front rolling roller and the rear rolling roller, and the hollow metal pipe is internally connected with a rubber hose;
the upper bottom surface of bottom plate links firmly with the flexible end of the scalable arm of fluid pressure type, and the vertical setting of the scalable arm of fluid pressure type is on the bottom plate.
The rubber hose can be connected with an anti-pumping device or a grouting device, the anti-pumping device is connected to facilitate hole cleaning after grooving, and accumulated soil in the groove can be sucked out while grooving, so that preliminary hole cleaning is realized.
The grouting device is connected for grouting and pouring immediately after grooving and hole cleaning are finished, so that the construction period is greatly shortened.
The rolling roller replaces a conical drill bit in the prior construction technology to excavate a slotted hole, the hole slope caused by the fact that the existing large-scale drilling machine is used for drilling holes when the drilling holes are in contact with different soft and hard stratums can be effectively reduced, the side-by-side roller type design and the side edge installation of the baffle plate which plays a directional role can ensure that the grooving direction of the drilling holes is always vertical, the hole slope can be reduced, and the olecranon-shaped blade can improve the drilling efficiency of the grooving device in a hard rock stratum and reduce the abrasion of the blade.
Preferably, the blades mounted on the same set of rollers face in the same direction, and the blades mounted on the front and rear sets of rollers face in opposite directions. By the design, the device can form grooves when moving forwards and backwards.
Preferably, the top end of the hydraulic telescopic mechanical arm is provided with a reserved connecting hole. The whole device can be lifted and carried by reserving the connecting holes.
In order to ensure that the device can meet the requirement of deeper grooving depth, the upper part of the grooving device is connected with a static grooving machine, and the static grooving machine applies power to the grooving device by connecting a hydraulic telescopic mechanical arm.
Preferably, in order to facilitate lifting of the device after completing grooving and hole cleaning and to avoid the device from sinking into slurry during grouting, the lower bottom surface of the bottom plate is also provided with a distance sensor. The distance sensor can monitor the distance between the bottom plate and the mud surface in real time, when the distance sensor monitors that the bottom plate is too close to the mud surface, the reserved connecting hole at the top end of the hydraulic telescopic mechanical arm can lift the whole device, so that the device and the poured mud surface always keep a certain distance, and the difficulty in cleaning the device by mud pollution is avoided being increased. The distance sensor belongs to the prior art and is not described in detail herein.
Preferably, the upper bottom surface of the bottom plate is also provided with an electronic level gauge, and the electronic level gauge is a Digi-Pas DWL 1000XY double-axis measuring column electronic level gauge.
A construction method of roller type cut-off wall grooving grouting equipment with side edge baffles comprises the following steps:
firstly, construction lofting is carried out, and the position of a slotted hole is selected according to construction requirements;
step two, equipment installation: firstly, connecting a rubber hose in a hollow metal pipe in the middle of a grooving device, connecting the rubber hose with a reverse pumping device on the ground, and fixing the horizontal position of a hydraulic telescopic mechanical arm;
thirdly, the rolling rollers and the blades are arranged side by side and downwards drilled into grooves under the pressure action of the mechanical arm and the static groove press, the side edge baffle plates simultaneously downwards play a directional role during the groove forming, and the accumulated soil in the grooves is sucked out by the reverse pumping device;
after grooving and hole cleaning are completed, connecting a rubber hose with a grouting pipe to extend into a static slurry pool on the ground, starting grouting and pouring, and keeping a proper distance between the grooving device and slurry all the time under the control of a distance sensor at the bottom edge of the static pressure groove forming machine during grouting, so that the grooving device can be lifted and cleaned after work conveniently;
step five, forming the continuous impervious wall: when the grouting in the fourth step is finished and the concrete reaches the designed strength, the construction of the segmented impervious wall is finished; and repeating the operations of rolling and drilling, static pressure grooving, reverse pumping hole cleaning and grouting to finish the construction of the adjacent sections of the impervious walls, and then connecting the sectioned impervious walls to form the continuous impervious wall.
Compared with the prior art, the invention has the beneficial effects that:
the construction method effectively reduces the hole slope caused by the conical drill bit drilling in the prior art, improves the efficiency of drilling and grooving in the underground hard soil layer, and the rubber hose can be connected with the inverse pump suction device and the grouting device, so that the device can perform hole cleaning and grouting work while finishing grooving, and the construction period is favorably shortened.
The equipment provided by the invention can be suitable for grooving construction of the diaphragm wall under various geological strata, can reduce the hole inclination rate caused in the construction process, and has very important engineering significance.
Drawings
Fig. 1 is a front view structure of the present invention.
Fig. 2 is a side view configuration of fig. 1.
Fig. 3 shows the structure of the crushing roller.
Fig. 4 is a side view configuration of fig. 3.
Fig. 5 shows a schematic view of the connection of a hollow metal tube to a rubber hose.
The device comprises an inverted triangular baffle 1, a blade 2, a hollow metal pipe 3, a distance sensor 4, a rubber hose 6, a connecting piece 7, an electronic level meter 8, a hydraulic telescopic mechanical arm 9 and a reserved connecting hole 10.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
as shown in fig. 1-4, the roller type cut-off wall grooving grouting equipment with the lateral edge baffle comprises a bottom plate, wherein the lower bottom surface of the bottom plate is rotatably connected with two groups of rolling rollers arranged side by side, a group of rolling rollers are respectively arranged in the front and at the back along the advancing direction of the device, each rolling roller is provided with a plurality of olecranon-shaped blades 2, the blades arranged on the same group of rolling rollers face the same direction, and the blades arranged on the front and at the back of the rolling rollers face opposite directions.
The front end and the rear end of the bottom plate are respectively connected with a baffle 1 with an inverted triangle shape, the baffle is vertically arranged downwards, the upper bottom surface and the lower bottom surface which penetrate through the bottom plate are connected with a hollow metal pipe 3, the hollow metal pipe is positioned between the front and the rear two groups of rolling rollers, a rubber hose can be connected in the hollow metal pipe, the hollow metal pipe and the rubber hose are fixedly connected through a connecting piece 7, the rubber hose can be connected with a reverse pump suction device or a grouting device, the lower bottom surface of the bottom plate is further provided with a distance sensor 4, and the distance sensor is ZDL 12-T.
The upper bottom surface of bottom plate links firmly with the flexible end of the scalable arm 9 of fluid pressure type, and the vertical setting of the scalable arm of fluid pressure type is on the bottom plate, and reservation connecting hole 10 has been seted up on the top of the scalable arm of fluid pressure type.
The last bottom surface of bottom plate still is provided with electron spirit level 8, and the electron spirit level is Digi-Pas DWL 1000XY biax survey post electron spirit level, and this electron spirit level has following advantage: 1) the measuring range is 0-90 degrees, the X/Y axes are synchronously measured, and angles and graphs are digitally displayed; 2) four orientation icons indicating measurement angles (X/Y axes); 3) the resolution is as high as 0.1 degree, the highest precision can reach +/-0.05 degree under 0 degree, and the precision can be +/-0.2 degree under other angles; 4) the sound prompt is provided at 0 degree, 90 degrees or a designated angle, so that the grooving direction is always vertical.
The construction method of the roller type cut-off wall grooving grouting equipment with the side edge baffle comprises the following steps:
firstly, construction lofting is carried out, and the position of a slotted hole is selected according to construction requirements;
step two, equipment installation: firstly, a rubber hose is connected in a hollow metal pipe in the middle of a grooving device, and the rubber hose is connected with a reverse pumping device on the ground to fix the horizontal position of the hydraulic telescopic mechanical arm.
And step three, the rolling rollers and the blades are arranged side by side and downwards drilled into grooves under the pressure action of the mechanical arm and the static groove press, the side edge baffle plate simultaneously downwards plays a directional role during groove forming, and the accumulated soil in the grooves is sucked out by the reverse pumping device.
And step four, after grooving and hole cleaning are completed, connecting a rubber hose with a grouting pipe to extend into a static slurry pool on the ground, starting grouting and pouring, and keeping a proper distance between the grooving device and slurry all the time under the control of a distance sensor at the bottom edge of the static pressure groove forming machine during grouting, so that the grooving device is convenient to lift and clean after construction.
Step five, forming the continuous impervious wall: when the grouting in the fourth step is finished and the concrete reaches the designed strength, the construction of the segmented impervious wall is finished; and repeating the operations of rolling and drilling, static pressure grooving, reverse pumping hole cleaning and grouting to finish the construction of the adjacent sections of the impervious walls, and then connecting the sectioned impervious walls to form the continuous impervious wall.
The diaphragm wall in engineering mainly comprises the following steps: drilling, grooving, cleaning, concreting, and usually by a sectional grooving construction method.
And (4) after grouting is completed on the slotted holes of the final diaphragm wall sections and the design strength is reached, namely all diaphragm wall section construction is completed, and diaphragm wall construction is completed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.
The non-illustrated parts referred to in the present invention are the same as or implemented by the prior art.