CN105067221A - Dynamic induction simulation device for broken surrounding rock grouting reinforcement, and testing method therefor - Google Patents
Dynamic induction simulation device for broken surrounding rock grouting reinforcement, and testing method therefor Download PDFInfo
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- CN105067221A CN105067221A CN201510382827.8A CN201510382827A CN105067221A CN 105067221 A CN105067221 A CN 105067221A CN 201510382827 A CN201510382827 A CN 201510382827A CN 105067221 A CN105067221 A CN 105067221A
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- 238000012360 testing method Methods 0.000 title claims abstract description 89
- 239000011435 rock Substances 0.000 title claims abstract description 47
- 238000004088 simulation Methods 0.000 title abstract description 6
- 230000002787 reinforcement Effects 0.000 title abstract description 4
- 230000006698 induction Effects 0.000 title abstract 2
- 230000003204 osmotic effect Effects 0.000 claims abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- 238000007569 slipcasting Methods 0.000 claims description 85
- 239000002002 slurry Substances 0.000 claims description 34
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 9
- 239000005341 toughened glass Substances 0.000 claims description 8
- 238000010998 test method Methods 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 238000007405 data analysis Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011981 development test Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 210000004911 serous fluid Anatomy 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a dynamic induction simulation device for broken surrounding rock grouting reinforcement, and a testing method therefor. The device consists of a test piece die, a grouting container, a high-pressure oxygen pressurizer, a sensing apparatus, a dynamic monitoring control system, and other main parts. The simulation of broken surrounding rocks in underground construction is achieved through the combination of mashed rock particles with different diameters. The dynamic monitoring control system is used for the real-time monitoring and control of grouting pressure, so as to enable the grouting pressure to remain steady. An osmotic pressure sensor and a flow sensor are used for the measurement of the osmotic pressure and flow of a rock mass, thereby providing data support for subsequent research.
Description
Technical field
The invention belongs to security technology area in underground works, particularly in underground works each factor of grouting program to the development test of breaking surrounding rock grouting consolidation effect.
Background technology
Due to the fragmentation of the chamber surrounding country rock that Underground Engineering Excavation causes, and underground works the natural rock crusher band of process, great threat can be caused to the safety of underground works.Not only breaking surrounding rock may come off and hurt staff, and country rock self-strength is as the important component part maintaining underground works stability, the intensity that rock crusher causes is not enough, causes underground works to be out of shape excessive, supporting construction inefficacy, produces major hidden danger to engineering safety.Be proven, by carrying out grouting and reinforcing to underground works breaking surrounding rock, to change Surrounding Rock Strength, performance country rock self bearing capacity, ensure that underground chamber has safely good effect, achieving the object increasing Surrounding Rock Strength.
Compared with putting into practice with the grouting and reinforcing of fast development, grouting and reinforcing theoretical developments is slow, and pole is necessary to design and produce a kind ofly studies the laboratory testing rig affecting slip casting effect correlative factor.There is following problem in test unit of the prior art:
(1) sample dimensions requires larger, better can not simulate rock mass more broken or smashed to pieces;
(2) existing apparatus is wayward to pressure, and test error is larger;
(3) existing apparatus can not be measured the change of slurry infiltration to pressure during rock mass.
Also not announcing at present a kind ofly has better simulation and the test unit accurately controlling grouting pressure and monitor fragmented rock body slip casting seepage pressure in underground works compared with breaking surrounding rock.
Summary of the invention
For solving prior art above shortcomings, the invention provides a kind of breaking surrounding rock grouting and reinforcing and dynamically responding to analogue means and test method thereof.
For achieving the above object, the present invention adopts following technical scheme:
A kind of breaking surrounding rock grouting and reinforcing dynamically responds to analogue means, comprise slip casting container, described slip casting internal tank be provided with several in order to hold different-grain diameter rock grain and simulate the test mould of slip casting process, the top of described test mould and bottom are supportted respectively by upper gear support and lower block and are fixed on described slip casting internal tank; At described slip casting internal tank, the above airtight epicoele formed in order to filling and grouting material of described upper gear support, the following cavity of resorption formed in order to hold the slurries oozed out from described test mould of described lower block support; Top and the bottom of described test mould are provided with some grouting holes being communicated with described epicoele and described cavity of resorption; The top of described slip casting container is provided with the pressue device in order to provide grouting pressure to described epicoele; Sensing device is provided with in described pressue device and described test mould; Described pressue device is connected with dynamic monitoring control system with described sensing device; Described dynamic monitoring control system is carried out real-time inspection and control by described sensing device to grouting pressure and is kept stable to make grouting pressure, and the information obtained by described sensing device provides Data support for the later stage is studied.
Described test mould is right cylinder, and material is tempered glass; Described mold by two semicylinders by upper cover and lower cover assembled; The surface of contact of described upper cover and lower cover and mold is inclined-plane; The draw-in groove puted forth effort for convenient wrench is provided with outside described upper cover and lower cover; Described upper cover and under cover the grouting hole being equipped with diameter 2-5mm; O-ring seal is covered with under described.
Described slip casting container is drum-shaped, and material is tempered glass, is provided with dismountable top cover and bottom; The epicoele of described slip casting container, for holding the injecting paste material slurries of Different Water-Cement Ratio and arranging different grouting pressures, injects slurries in described test piece mould.
Keep off in support and the support of described lower block on described, be provided with the fluting corresponding with described test piece mould, described test mould is placed in described fluting, and airtight by O-ring seal; The opening that all described grouting holes are exposed is provided with in described fluting.
The side wall lower ends of described cavity of resorption is provided with stop valve; Described pressue device is high pressure oxygen pressurizer; When slip casting from the bottom up, in described epicoele, be provided with the piston of good seal.
Described sensing device comprises pressure transducer, osmotic pressure sensor and flow sensor; Described pressure transducer is laid in described pressue device gas piping end, and described osmotic pressure sensor and described flow sensor are laid in the inside of described test piece mould.
Described dynamic monitoring control system comprises data handling system and movement device; Described data handling system is used for the drafting of data analysis and the data image transmitted described sensing device; Described movement device comprises command receiver, gas flow adjuster, pressurizing valve and blowdown valve, described command receiver receives the action command that described data handling system transmits, the switch being adjusted spool in described pressurizing valve and blowdown valve by described gas flow adjuster changes pressurization or pressure release state, by the sectional area of the control break gas passage to spool, control the speed of boosting or step-down.
Described data handling system receives the grouting pressure that pressure transducer transmits, and carries out contrasting backward movement device with preset value and send action command, regulates grouting pressure size; Seepage pressure in the test specimen that described data handling system reception osmotic pressure sensor and flow sensor transmit and seepage discharge, and contrast with preset value, decide slip casting process and whether terminate.
Breaking surrounding rock grouting and reinforcing dynamically responds to a test method for analogue means, comprises the following steps:
A. test material is loaded test piece mould, and be fixed between two gear supports, slip casting container is filled slurries and seals;
B. the defeated pressure pipe of high pressure oxygen pressurizer is connected with the pressurization hole of slip casting container upper cover, slip casting container is pressurizeed;
C. pressure data in pressure transducer Real-time Collection pressure process, and fed back to data handling system, data handling system receives the grouting pressure data that transmit of pressure transducer, and carries out contrasting backward movement device with preset value and send action command, regulates grouting pressure size;
D. the osmotic pressure sensor received when data handling system and the test specimen rock-mass seepage pressure that transmits of flow sensor and seepage discharge reach the standard of setting, and slip casting process terminates.
Wherein, in steps A, when slip casting from top to bottom, first epicoele is filled slurries, then pressurize, cavity of resorption is as discharging air and the container oozing lower slurries; When slip casting from the bottom up, first epicoele is filled slurries, and install piston, install upper cover and tighten the screws, then container is turned over turnback, then to epicoele pressurization, pressure-air promotes piston to upper piston area liquid pressing.
Beneficial effect of the present invention is:
The present invention utilizes the combination of the different-grain diameter rock grain ground to carry out the breaking surrounding rock of simulate formation engineering, has good similarity, can realize the authentic simulation to underground works breaking surrounding rock.Be provided with multiple test mould at slip casting internal tank simultaneously, the slip casting situation of different degree of crushing country rock can be simulated simultaneously, improve test efficiency.
Top and the bottom of test mould are provided with some grouting holes being communicated with described epicoele and described cavity of resorption, the epicoele of slip casting container may be used for holding the injecting paste material slurries of Different Water-Cement Ratio and arranges different pressures, slurries are injected in described test piece mould, thus to realize the simulation process of slip casting in breaking surrounding rock.
By dynamic monitoring control system, real-time inspection and control is carried out to grouting pressure, to make grouting pressure keep stable, improve the degree of accuracy of slip casting process.Carry out slip casting procedure parameter mensuration by osmotic pressure sensor and flow sensor to test fragmented rock body, overcoming existing apparatus cannot carry out test problems to rock mass internal penetration pressure, for probing into of later stage slip casting principle provides Data support.
Described test piece mould material is tempered glass, is beneficial to the visual observation to slurries diffusion; Mold by two semicylinders by upper cover and lower cover assembled, when test specimen solidify maintenance complete after can taking-up test specimen for convenience detach; Upper and lower covers and mold surface of contact are inclined-plane, and are provided with the draw-in groove puted forth effort for convenient wrench outside upper and lower covers, the difficult problem that after solving grout cures, upper and lower covers is not easily opened.Upper and lower covers all has the grouting hole of diameter 2-5mm, after test specimen is taken out in the initial set of band slurries, can clean out by taking off upper and lower covers by residual for slurries in hole.Under be covered with O-ring seal, spillage when can prevent slip casting.
Slip casting container is provided with drum-shaped, convenient during cleaning.Use tempered glass, intensity is high and can carry out visual observation.Top cover and bottom detachably, facilitate the operation of test.
Gear support arranges fluting, and the placement of test piece mould can be made more stable, and test piece mould can put into groove, and O-ring seal can be had airtight, for slip casing by pressure provides possibility.
The side wall lower ends of described cavity of resorption is provided with a stop valve, during for injection slurry initial set, and the discharge of unnecessary slurries.Described high pressure oxygen pressurizer is provided by release high pressure oxygen and adds pressure power, compares hydraulic pressurization mode, has the advantage that boosting is rapid, test efficiency is high.When test material particle is thinner, the difficulty of slip casting from top to bottom, needs slip casting from the bottom up; Now need to use piston, realize the operation of slip casting from the bottom up.The sealing that described piston is specifically good, when not installing piston from during epicoele slip casting, need install piston from during cavity of resorption slip casting.
Described sensing device comprises pressure transducer, osmotic pressure sensor and flow sensor, three belongs to wireless senser, pressure transducer is laid in the end of high pressure oxygen pressurizer oxygen cathete, for monitoring grouting pressure, osmotic pressure sensor and flow sensor are laid in test piece mould, for judging that the standard that grouting test stops and later stage are to the research of fragmented rock body reinforcement mechanism.
Accompanying drawing explanation
Fig. 1 is that breaking surrounding rock grouting and reinforcing dynamically responds to analogue means structural drawing;
Fig. 2 a is that test piece mould sidewall is analysed and observe;
Fig. 2 b is test piece mould vertical view;
Fig. 3 a is test piece mould upper cover cut-open view;
Fig. 3 b is test piece mould upper cover top view;
Fig. 4 a is that test piece mould lower cover is analysed and observe;
Fig. 4 b is test piece mould lower cover and vertical view;
Fig. 5 a is analysing and observe of slip casting container upper cover;
Fig. 5 b is slip casting container upper cover vertical view;
Fig. 6 is slip casting pan straddle outboard profile;
Fig. 7 is pressure control logic block diagram.
In figure: 1. slip casting container upper cover, 2. piston, 3. epicoele, gear support 4., 5. slip casting container side wall, 6. test piece mould, 7. osmotic pressure sensor, 8. flow sensor, 9. lower block support, 10. cavity of resorption, 11. slip casting container lower covers, 12. cavity of resorption stop valves, 13. pressure transducers, 14. slip casting pan straddles, 15. movement devices, 16. data handling systems, 17. test piece mould sidewalls, 18. test piece mould upper covers, 19. test piece mould lower covers, 20. O-ring seals, 21. grouting holes, 22. inclined-planes, 23. draw-in grooves.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
A kind of breaking surrounding rock grouting and reinforcing dynamically responds to analogue means, and it is made up of major parts such as test piece mould 6, slip casting container 24, high pressure oxygen pressurizer, sensing device and dynamic monitoring control system.
Described test piece mould 6 material is tempered glass, be beneficial to the visual observation to slurries diffusion, the two halves that test piece mould sidewall 17 is divided into by a drum form, when test specimen solidify maintenance complete after can taking-up test specimen for convenience detach, test piece mould upper cover 18 and test piece mould lower cover 19 are inclined-plane 22 with mould body surface of contact, and outside upper and lower covers, be provided with the draw-in groove 23 puted forth effort for convenient wrench, the difficult problem that after solving grout cures, upper and lower covers is not easily opened, upper and lower covers all has the grouting hole 21 of diameter 2-5mm, after test specimen is taken out in slurries initial set, clean out residual for slurries in hole by rotating upper and lower covers, test piece mould lower cover 10 is provided with O-ring seal 20, spillage when can prevent slip casting.
Described slip casting container 24, for holding the injecting paste material slurries of Different Water-Cement Ratio and arranging different pressure, injects slurries in described test piece mould 6.
Described slip casting container 24 shape is drum type, the material of slip casting container side wall 5 is tempered glass, wall thickness is greater than 25mm, and slip casting container upper cover 1 and slip casting container lower cover 11 are all detachable, and have O-ring seal to seal, screw is fixed, screw quantity is greater than 9, and upper and lower covers wall thickness is greater than 25mm, is divided into slip casting container epicoele 3 and slip casting container cavity of resorption 10, upper and lower cavity gear support 4 and lower block support 9 separate, two gear support intermediate arrangement, 9 test piece moulds 6.
Both can slip casting from top to bottom when described slip casting container 24 is tested, again can slip casting from the bottom up, solve when test material particle is thinner, the problem of slip casting difficulty from top to bottom.
Described upper gear support 4 and lower block support 9 arrange corresponding linked hole equally in the grouting hole position of test piece mould upper cover 18 and test piece mould lower cover 19, and link up upper and lower cavity, when when epicoele slip casting, slurry infiltration crosses rock mass, flows into cavity of resorption, when cavity of resorption slip casting in like manner.
The thickness of described upper and lower two gear supports is greater than 30mm, gear support there is the fluting of the described test piece mould of multiple correspondence, groove depth 10mm-20mm, opening is had in groove, mould can be put into groove and can be airtight by O-ring seal, groove split shed is enough large all can be comprised the grouting port of mould lower cover, and described slip casting container upper and lower cavity seals completely except the opening of gear support.
The right side wall of described cavity of resorption is provided with cavity of resorption stop valve 12, for when grouting serous fluid initial set, and the discharge of unnecessary slurries.
Described breaking surrounding rock grouting and reinforcing dynamically responds to analogue means, is placed on slip casting pan straddle 14.When from epicoele 3 slip casting, first epicoele 3 is filled slurries, then pressurize, cavity of resorption 10 is as discharging air and the container oozing lower slurries.When slip casting from the bottom up, first epicoele 3 is filled slurries, and piston 2 is installed, slip casting container upper cover 1 is installed and tighten the screws, then container is turned over turnback, be placed on slip casting pan straddle 14, then pressurize from epicoele 3, pressure-air promotes piston and pressurizes to piston 2 upper liquid.
Described piston 2, is characterized in that the sealing that piston is specifically good, when not installing piston from during epicoele 3 slip casting, need install piston from during cavity of resorption slip casting.
Described high pressure oxygen pressurizer is provided by release high pressure oxygen and adds pressure power, compares hydraulic pressurization mode, has the advantage that boosting is rapid, test efficiency is high.
Described sensing device comprises pressure transducer 13, osmotic pressure sensor 7 and flow sensor 8, and three belongs to wireless senser.
Described pressure transducer 13 is laid in the end of high pressure oxygen pressurizer oxygen cathete, for monitoring grouting pressure, osmotic pressure sensor 7 and flow sensor 8 are laid in test piece mould 6, its data measured are transmitted and are saved in dynamic monitoring control system, for judging that the standard that grouting test stops and later stage are to the research of fragmented rock body reinforcement mechanism.
Described dynamic monitoring control system comprises data handling system 16, movement device 15 two parts.
Described data handling system, for the drafting of the data analysis that transmits sensing device and data image.
Described data handling system receives the grouting pressure that pressure transducer transmits, and carries out contrasting backward movement device with preset value and send action command, regulates grouting pressure size.
Seepage pressure in the test specimen that described data handling system reception osmotic pressure sensor and flow sensor transmit and seepage discharge, and contrast with preset value, decide slip casting process and whether terminate.
Described movement device comprises command receiver, gas flow adjuster, pressurizing valve and blowdown valve, command receiver receives the action command that data handling system transmits, pressurization or pressure release state is changed by the switch of gas flow adjuster adjustment spool, by changing the sectional area of gas passage to spool, control the speed of boosting or step-down.
For from epicoele slip casting, its process is described as follows:
(1) the combination particle diameter that testing program requires is loaded in 6 test piece moulds, and 7 osmotic pressure sensor and flow sensor are fixed wherein;
(2) each 6 test piece moulds are put into slip casting container, and each test piece mould is stuck in the fluting of 9 lower blocks supports, cover keeping off support on 4, and to guarantee on 4 that gear struts groove and 6 test piece moulds clamp;
(3) 3 epicoeles are filled the injecting paste material that testing program requires, cover the upper cover of 1 slip casting container, and tighten the screws closes slip casting container;
(4) the defeated pressure pipe of high pressure oxygen pressurizer is connected with the pressurization hole of slip casting container upper cover 1, starts biased switch, and pressurize according to the pressure of experimental program defined;
Pressure data in (5) 13 pressure transducer Real-time Collection pressure processes, and fed back to data handling system, 16 data handling systems receive the grouting pressure data that 13 pressure transducers transmit, and carry out backward 15 movement devices of contrast with preset value and send action command, regulate grouting pressure size;
(6) when 16 data handling systems receive the standard that test specimen rock-mass seepage pressure that 7 osmotic pressure sensor and 8 flow sensors transmit and seepage discharge reach setting, slip casting process terminates;
(7) when slurries reach initial set, 12 stop valves of cavity of resorption wall are opened, discharges unnecessary slurries;
(8) take out 6 test piece moulds and after the maintenance regular hour, open mould, taking out test specimen, make rock mechanics experiment test specimen and detect.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. a breaking surrounding rock grouting and reinforcing dynamically responds to analogue means, it is characterized in that: comprise slip casting container, described slip casting internal tank be provided with several in order to hold different-grain diameter rock grain and simulate the test mould of slip casting process, the top of described test mould and bottom are supportted respectively by upper gear support and lower block and are fixed on described slip casting internal tank; At described slip casting internal tank, the above airtight epicoele formed in order to filling and grouting material of described upper gear support, the following cavity of resorption formed in order to hold the slurries oozed out from described test mould of described lower block support; Top and the bottom of described test mould are provided with some grouting holes being communicated with described epicoele and described cavity of resorption; The top of described slip casting container is provided with the pressue device in order to provide grouting pressure to described epicoele; Sensing device is provided with in described pressue device and described test mould; Described pressue device is connected with dynamic monitoring control system with described sensing device; Described dynamic monitoring control system is carried out real-time inspection and control by described sensing device to grouting pressure and is kept stable to make grouting pressure, and the information obtained by described sensing device provides Data support for the later stage is studied.
2. a kind of breaking surrounding rock grouting and reinforcing according to claim 1 dynamically responds to analogue means, it is characterized in that: described test mould is right cylinder, and material is tempered glass; Described mold by two semicylinders by upper cover and lower cover assembled; The surface of contact of described upper cover and lower cover and mold is inclined-plane; The draw-in groove puted forth effort for convenient wrench is provided with outside described upper cover and lower cover; Described upper cover and under cover the grouting hole being equipped with diameter 2-5mm; O-ring seal is covered with under described.
3. a kind of breaking surrounding rock grouting and reinforcing according to claim 1 dynamically responds to analogue means, it is characterized in that: described slip casting container is drum-shaped, and material is tempered glass, is provided with dismountable top cover and bottom; The epicoele of described slip casting container, for holding the injecting paste material slurries of Different Water-Cement Ratio and arranging different grouting pressures, injects slurries in described test piece mould.
4. a kind of breaking surrounding rock grouting and reinforcing according to claim 1 dynamically responds to analogue means, it is characterized in that: keep off in support and the support of described lower block on described, be provided with the fluting corresponding with described test piece mould, described test mould is placed in described fluting, and airtight by O-ring seal; The opening that all described grouting holes are exposed is provided with in described fluting.
5. a kind of breaking surrounding rock grouting and reinforcing according to claim 1 dynamically responds to analogue means, it is characterized in that: the side wall lower ends of described cavity of resorption is provided with stop valve; Described pressue device is high pressure oxygen pressurizer; When slip casting from the bottom up, in described epicoele, be provided with the piston of good seal.
6. a kind of breaking surrounding rock grouting and reinforcing according to claim 1 dynamically responds to analogue means, it is characterized in that: described sensing device comprises pressure transducer, osmotic pressure sensor and flow sensor; Described pressure transducer is laid in described pressue device gas piping end, and described osmotic pressure sensor and described flow sensor are laid in the inside of described test piece mould.
7. a kind of breaking surrounding rock grouting and reinforcing according to claim 1 dynamically responds to analogue means, it is characterized in that: described dynamic monitoring control system comprises data handling system and movement device; Described data handling system is used for the drafting of data analysis and the data image transmitted described sensing device; Described movement device comprises command receiver, gas flow adjuster, pressurizing valve and blowdown valve, described command receiver receives the action command that described data handling system transmits, the switch being adjusted spool in described pressurizing valve and blowdown valve by described gas flow adjuster changes pressurization or pressure release state, by the sectional area of the control break gas passage to spool, control the speed of boosting or step-down.
8. a kind of breaking surrounding rock grouting and reinforcing according to claim 7 dynamically responds to analogue means, it is characterized in that: described data handling system receives the grouting pressure that pressure transducer transmits, and carry out contrasting backward movement device with preset value and send action command, regulate grouting pressure size; Seepage pressure in the test specimen that described data handling system reception osmotic pressure sensor and flow sensor transmit and seepage discharge, and contrast with preset value, decide slip casting process and whether terminate.
9. breaking surrounding rock grouting and reinforcing dynamically responds to a test method for analogue means, it is characterized in that, comprises the following steps:
A. test material is loaded test piece mould, and be fixed between two gear supports, slip casting container is filled slurries and seals;
B. the defeated pressure pipe of high pressure oxygen pressurizer is connected with the pressurization hole of slip casting container upper cover, slip casting container is pressurizeed;
C. pressure data in pressure transducer Real-time Collection pressure process, and fed back to data handling system, data handling system receives the grouting pressure data that transmit of pressure transducer, and carries out contrasting backward movement device with preset value and send action command, regulates grouting pressure size;
D. the osmotic pressure sensor received when data handling system and the test specimen rock-mass seepage pressure that transmits of flow sensor and seepage discharge reach the standard of setting, and slip casting process terminates.
10. a kind of breaking surrounding rock grouting and reinforcing according to claim 1 dynamically responds to the test method of analogue means, it is characterized in that: in steps A, when slip casting from top to bottom, first epicoele is filled slurries, then pressurize, cavity of resorption is as discharging air and the container oozing lower slurries; When slip casting from the bottom up, first epicoele is filled slurries, and install piston, install upper cover and tighten the screws, then container is turned over turnback, then to epicoele pressurization, pressure-air promotes piston to upper piston area liquid pressing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618250A (en) * | 2019-09-20 | 2019-12-27 | 龙岩学院 | Device and method for forming grouting reinforcement material under uniform loading condition |
| CN110646262A (en) * | 2019-09-30 | 2020-01-03 | 龙岩学院 | Grouting reinforcement material forming device under constraint condition and using method thereof |
| CN114018707A (en) * | 2021-11-12 | 2022-02-08 | 中国地质大学（北京） | Pressure grouting test device and method for fractured rock mass in caving zone |
| CN114152510A (en) * | 2021-12-28 | 2022-03-08 | 中国海洋大学 | Test device and test method for water-rich broken rock stratum moving water grouting reinforcement model |
| CN114397238A (en) * | 2022-01-24 | 2022-04-26 | 中国矿业大学 | Coal-rock mass three-dimensional visual grouting test device and use method |
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| CN103048439A (en) * | 2012-12-04 | 2013-04-17 | 三峡大学 | Pressure grouting experiment device |
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2015
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| US20040045366A1 (en) * | 2002-09-05 | 2004-03-11 | Gary Workman | Grout sample unbonded capping system |
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| CN102680647A (en) * | 2012-04-20 | 2012-09-19 | 天地科技股份有限公司 | Coal-rock mass grouting reinforcement test bed and test method |
| CN102967687A (en) * | 2012-11-07 | 2013-03-13 | 北京交通大学 | Indoor fracturing grouting experiment system under bidirectional anisobaric condition |
| CN103048439A (en) * | 2012-12-04 | 2013-04-17 | 三峡大学 | Pressure grouting experiment device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618250A (en) * | 2019-09-20 | 2019-12-27 | 龙岩学院 | Device and method for forming grouting reinforcement material under uniform loading condition |
| CN110646262A (en) * | 2019-09-30 | 2020-01-03 | 龙岩学院 | Grouting reinforcement material forming device under constraint condition and using method thereof |
| CN114018707A (en) * | 2021-11-12 | 2022-02-08 | 中国地质大学（北京） | Pressure grouting test device and method for fractured rock mass in caving zone |
| CN114152510A (en) * | 2021-12-28 | 2022-03-08 | 中国海洋大学 | Test device and test method for water-rich broken rock stratum moving water grouting reinforcement model |
| CN114152510B (en) * | 2021-12-28 | 2023-12-22 | 中国海洋大学 | Dynamic water grouting reinforcement model test device and test method for water-rich broken rock layer |
| CN114397238A (en) * | 2022-01-24 | 2022-04-26 | 中国矿业大学 | Coal-rock mass three-dimensional visual grouting test device and use method |
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