CN107525541A - A kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig and method - Google Patents
A kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig and method Download PDFInfo
- Publication number
- CN107525541A CN107525541A CN201710658405.8A CN201710658405A CN107525541A CN 107525541 A CN107525541 A CN 107525541A CN 201710658405 A CN201710658405 A CN 201710658405A CN 107525541 A CN107525541 A CN 107525541A
- Authority
- CN
- China
- Prior art keywords
- grouting
- coal
- pressure
- rock
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses a kind of hypotonicity coal and rock to cleave infiltration coupling grouting experimental rig and method, the device includes and grouting test inner casing and the grouting test outer shell being located on the outside of grouting test inner casing, in grouting test, outer shell lower end is connected with base, grouting test inner casing upper end is provided with top sealing pressure head, grouting test outer shell upper end is provided with annular pressure head, in grouting test, outer shell, circular passage is formed between base and annular pressure head, grouting test outer shell top is communicated with excessive the slurry pipe and blast pipe of circular passage, coal and rock sample is filled in grouting test inner casing, coal and rock sample center is provided with grouting tube, grouting tube is furnished with extravasating hole, base is provided with injected hole, injected hole is connected with grouting tube, electronic cement stirring station connects with grouting pump, grouting pump is connected by high-pressure slip-casting flexible pipe with injected hole.The present invention have it is simple in construction, making is easy, low-cost, easy to operate, large scale is totally-enclosed, service-strong advantage.
Description
Technical field
The present invention relates to a kind of hypotonicity coal and rock to cleave infiltration coupling grouting experimental rig and method, is particularly suitable for use in
The high pressure splitting infiltration coupling grouting experiment of the medium such as laboratory simulation hypotonicity coal and rock or soil sample, sand sample.
Background technology
Passed through in mine and underground engineering in unfavorable geology or aquifer water-bearing stratum construction, slip casting is a kind of reinforcing country rock body and envelope
The effective technology of stifled underground water, it utilizes plant equipment, takes rational grouting process, and suitable organic system or inorganic system are noted
In pulp material injection engineering, to reach the purpose of filling, reinforcing, water blockoff.For injecting paste material, organic system injecting paste material can
Note property preferably, water blockoff rapidly and efficiently, but cost is high, seriously polluted, reinforcing body low intensity, and consolidation effect is poor, in Practical Project
Using less, it is usually used in grouting for water blocking and quicksand and the special engineering such as reinforces；Inorganic system's injecting paste material abundance, it is cheap,
Consolidating strength is high, anti-permeability performance is good, grouting process is simple, constructing operation is convenient, and cement base plasmoid humor is the most frequently used at present
Injecting paste material；It is poor to the slip casting effect of microfissure, low permeability formation but cement is means of particulate material.Currently, most of notes
Slurry theory is mainly studied slurries with grouting test and oozed without lateral spacing constraints lower plane diffusion effect and big aperture crack slurries
Flow Diffusion Law, it is impossible to which true reflection crustal stress is with slurries under country rock body constraint extruding condition in hyposmosis such as microfissure coal and rocks
Property medium in actual dispersion process, and it is that the medium slip casting diffusion of research coal and rock etc. can not with reinforcement mechanism to simulate grouting test
The important method lacked.This is due to that method of grouting simulation experiment has the characteristics of directly perceived, economic, easy, feasible, be reproduce
Diffusion process of the slurries in the media such as coal and rock, slurry injection technique can be made to refine, be scientific, can preferably solve grouting theory
With problem present in Practical Project, the blindness and grouting cost only constructed by rule of thumb are reduced, is that an application is relatively broad
Research meanses.The crack that under deep resource exploitation condition of high ground stress the medium aperture such as coal and rock can be caused larger tends to close
Close, a large amount of minute fissures in country rock body be present (pore diameter or fracture opening are less than 0.2mm) so that the property noted of coal and rock
Reduce；In addition, for argillaceous agglutination rock (mud stone, argillaceous sandstone etc.), its internal crack aperture is smaller, porosity compared with
It is low, the property noted is poor；In addition, the also medium such as quicksand, clay, its density is preferable, and cement base plasmoid humor slip casting effect is poor.
That is being influenceed by diagenesis condition and stress level, some Underground Engineering Excavation back wall rock cranny apertures are small, cause cement
Free-flowing of the base class slurries in micro-crack is obstructed, only with by slurries extruding diffusion compaction grouting effect compared with
Difference；This just needs constantly to improve grouting pressure, can will be hypotonic when grouting pressure reaches a certain critical pressure (cleavage fracture stress)
Microfissure in the media such as permeability coal and rock aperture increase, to improve the mobility of slurries and dilation angle, reach reinforcing and
The purpose of grouting for water blocking.
At present, due to the influence of the factors such as the condition of being put to the test and subjects, existing grouting test simulator can only
Densification osmotic grouting is simulated to a certain extent, because being split by note coal and rock for the mixture of small block structure or containing more
Gap and the larger complete coal and rock of fracture opening, its internal crack development, loosely organized is caused, overall permeability is good, the property noted
By force, be easy to the free-flowing of slurries to spread, normally only need less grouting pressure i.e. can be achieved cement base plasmoid humor crack compared with
Diffusion in the coal and rock of development；Further, since grouting device size too small and sealing deficiency the problems such as, cause running pulp
Phenomenon is universal, it is difficult to realizes Application of High pressure Split Grouting.And actual mine in underground engineering with being widely present crack agensis or crack
The less hypotonicity coal and rock of aperture, due to cement base can not be made using less grouting pressure in conventional osmotic grouting technique
Class injecting paste material is penetrated into microfissure；This just needs raising grouting pressure to split a range of hypotonicity coal and rock
Split, the larger Fracture Networks (pore diameter or fracture opening are more than 0.2mm) of aperture are formed in coal and rock, improve the stream of slurries
Dynamic property and diffusion effect.How to judge whether grouting pressure has reached the cleavage fracture stress of the media such as hypotonicity coal and rock, at present
Only certain theoretical answer, but the factor such as parameters of fissure, distribution character and crustal stress is influenceed in by media such as coal and rocks, is caused
The theoretical answer of cleavage fracture stress is not inconsistent with Practical Project situation.Therefore, develop simulation crack agensis or fracture opening is less
It is very necessary that the high pressure of the media such as hypotonicity coal and rock cleaves-permeated coupling grouting experimental rig, can be analysis slurries micro-
Infiltration flowing and splitting Diffusion Law in crackle, and announcement hypotonicity coal and rock cleave-permeated coupling grouting mechanism and carry
For experimental basis.
The content of the invention
Goal of the invention：The present invention seeks to overcome prior art weak point, the i.e. hypotonicity for crack agensis
The medium such as coal and rock or the less soil sample of hole (space) rate, sand sample offer one kind is simple in construction, it is easy, low-cost to make,
It is easy to operate, large scale is totally-enclosed, service-strong high pressure splitting infiltration coupling grouting experimental rig.
To achieve these goals, present invention employs following technical scheme：A kind of hypotonicity coal and rock splitting is oozed
Saturating coupling grouting experimental rig, including base, grouting pump, electronic cement stirring station, grouting test inner casing, grouting test outer shell,
Grouting tube, coal and rock sample；The lower end of the grouting test inner casing is connected with base, and the upper end of grouting test inner casing is provided with can
The top sealing pressure head of activity, the grouting test outer shell is located on the outside of grouting test inner casing, under grouting test outer shell
End is connected with base, and the upper end of grouting test outer shell is provided with annular pressure head, grouting test inner casing, grouting test outer shell, base and
Circular passage is formed between annular pressure head, the top of grouting test outer shell is provided with overflow slurry pipe and blast pipe, and overflow slurry pipe and blast pipe
Connected respectively with circular passage, the coal and rock sample is filled in cylinder interior in grouting test, is set at the center of coal and rock sample
Grouting tube is put, extravasating hole is evenly equipped with grouting tube, the base offers base injected hole, and base injected hole is spent with slip casting
Pipe lower end is connected, and the electronic cement stirring station connects with the entrance of grouting pump, and the outlet of grouting pump passes through high-pressure slip-casting flexible pipe
Connected with base injected hole.
Further, multiple densification blockings that allow symmetrically are arranged in the circular passage.
Further, the inwall of the grouting test inner casing is arranged at intervals with some annular slurries gathered troughs, and slurries gather
Plasma discharge steam vent is offered in the middle part of collection groove, plasma discharge steam vent connects with circular passage.
Further, the outlet of the grouting pump sets slurries servo-control system, is set on the high-pressure slip-casting flexible pipe
Slurry flow, pressure and measuring density system.
Further, spring micro-open type safety valve and diaphragm pressure gage are set on the excessive slurry pipe；On the blast pipe
Gas exhausting valve is set；The lower section of the excessive slurry pipe sets slurries container containing.
Further, in the annular notches on the lower end inserted base of the grouting test inner casing；Outside the grouting test
The lower end of cylinder is fixedly connected with base by high-strength bolt.
Further, the base injected hole includes injected hole one and injected hole two, and injected hole one is located at the center of base
Position, grouting tube lower end are inserted in injected hole one, and the one end of injected hole two connects with injected hole one, the extension of the other end of injected hole two
To base side and flange disk is installed, high-pressure slip-casting flexible pipe is connected with flange disk.
A kind of hypotonicity coal and rock splitting infiltration coupling grouting test method using above-mentioned experimental rig, the experiment side
Method comprises the following steps：
Step 1：Pressure testing machine is connected with top sealing pressure head, starts pressure testing machine, pressure head is sealed by top
Predetermined shaft pressure is applied to coal and rock sample, it is by blast pipe that grouting test inner casing and annular is logical during axle pressure is applied
Gas discharge in road, by grouting test inner casing, grouting test outer shell and allows densification blocking to provide ring to coal and rock sample
Restraining force；
Step 2：A certain proportion of cement and water are put into electronic cement stirring station and mixed, uniformly after mixing
Slurries be transported to by grouting pump, high-pressure slip-casting flexible pipe in the injected hole one and injected hole two of base, then spent by slip casting
Extravasating hole in pipe extrudes to coal and rock sample to spread, and the grouting pressure of grouting pump is less than the splitting pressure of hypotonicity coal and rock
Power, until high-pressure slip-casting inside hose slurry flow is zero or slurry reflux phenomenon occurs；
Step 3：The grouting pressure of grouting pump is stepped up to the cleavage fracture stress of hypotonicity coal and rock, by coal and rock
The aperture increase of the microfissure of sample, makes slurries continue to be injected into coal and rock sample.
Further, during implementation steps three, constantly collected by the gas of coal and rock sample and unnecessary slurries
It is discharged in circular passage in slurries gathered trough, and by plasma discharge steam vent, with the raising of grouting pressure, is starched in circular passage
Liquid constantly accumulation increases and is filled with whole circular passage, when circular passage internal pressure and external air pressure difference exceed setting
During pressure value, spring micro-open type safety valve is automatically opened up, and by overflowing, the gas in circular passage and slurries are discharged to slurry by slurry pipe
In liquid container containing, to ensure the lasting progress of slip casting.
Further, during implementation steps two and step 3, slurry flow, pressure and measuring density system are passed through
Flow, pressure and the density of real-time dynamic monitoring slurries, so as to ensure the easy property of slurries and effective control of grouting pressure, realize
To the Precise control of slip casting process.
Beneficial effect：Grouting test device of the present invention can the complete coal and rock splitting infiltration of simulation reconstruction large scale hypotonicity
The overall process of coupling grouting, and with the densification osmotic grouting function of carrying out the media such as fractured coal and rock, also can also be used for simulating
A variety of media such as different gradation, the soil body of hole (space) rate, sand body, soil-rock mixture are under the conditions of densification and fracture grouting
Slip casting Diffusion Law, analyze grouting consolidation effect and determine to be produced critical grouting pressure required when cleaving by note medium；And
Standard specimen can be made by coring in the media such as the coal and rock after reinforcing, carry out the experiment of its basic mechanical and mesomechanics examination
Test.The apparatus structure is simple, and it is easy to make, low-cost, easy to operate, using reliable.
Brief description of the drawings
Fig. 1 is the structural representation of grouting test device of the present invention；
Fig. 2 is A direction views in Fig. 1；
Fig. 3 is B direction views in Fig. 1；
In figure：1-base, 2-high-pressure slip-casting flexible pipe, 3-slurry flow, pressure and measuring density system, 4-slurries are watched
Take control system, 5-grouting pump, 6-electronic cement stirring station, 7-flange disk, 8-injected hole two, 9-high-strength bolt,
10-overflow slurry pipe, 11-spring micro-open type safety valve, 12-diaphragm pressure gage, 13-blast pipe, 14-gas exhausting valve,
15-slurries container containing, 16-grouting test inner casing, 17-grouting test outer shell, 18-circular passage, the sealing of 19-top
Pressure head, 20-allow densification blocking, 21-slurries gathered trough, 22-plasma discharge steam vent, 23-grouting tube, 24-extravasating hole,
25-injected hole one, 26- coal and rock samples, 27- annular pressure heads.
Embodiment：
Further explanation is done to the present invention below in conjunction with the accompanying drawings.
As shown in Figures 1 to 3, a kind of hypotonicity coal and rock of the invention splitting infiltration coupling grouting experimental rig, including
Base 1, grouting pump 5, electronic cement stirring station 6, grouting test inner casing 16, grouting test outer shell 17, grouting tube 23, coal and rock
Sample 26 etc..
In annular notches on the lower end inserted base 1 of grouting test inner casing 16, the upper end of grouting test inner casing 16 is provided with
Mobilizable top seals pressure head 19.Grouting test outer shell 17 is located on the outside of grouting test inner casing 16, grouting test outer shell
17 lower end is fixedly connected with base 1 by high-strength bolt 9, and the upper end of grouting test outer shell 17 is provided with annular pressure head 27, slip casting
Test and circular passage 18 is formed between inner casing 16, grouting test outer shell 17, base 1 and annular pressure head 27, in circular passage 18
It is even to be arranged symmetrically multiple densification blockings 20 that allow.
The inwall of grouting test inner casing 16 is arranged at intervals with some annular slurries gathered troughs 21, in slurries gathered trough 21
Portion offers plasma discharge steam vent 22, and plasma discharge steam vent 22 connects with circular passage 18.The top of grouting test outer shell 17, which is provided with, overflows
Pipe 10 and blast pipe 13 are starched, excessive slurry pipe 10 and blast pipe 13 connect with circular passage 18 respectively.Overflowing to starch sets spring micro- on pipe 10
Opening type safety valve 11 and diaphragm pressure gage 12.Gas exhausting valve is set on blast pipe 13.Overflow and starch the lower section setting slurries of pipe 10
Container containing 15.
Coal and rock sample 26 is filled in inside grouting test inner casing 16, in the centrally disposed grouting tube of coal and rock sample 26
23, extravasating hole 24 is evenly equipped with grouting tube 23.
Base 1 offers base injected hole, and base injected hole includes injected hole 1 and injected hole 28, injected hole 1
In the center of base 1, the lower end of grouting tube 23 insertion injected hole 1, the one end of injected hole 28 and injected hole 1
Connection, the other end of injected hole 28 extend to the side of base 1 and are provided with flange disk 7.
Electronic cement stirring station 6 connects with the entrance of grouting pump 5, the outlet of grouting pump 5 and one end of high-pressure slip-casting flexible pipe 2
It is connected, the other end of high-pressure slip-casting flexible pipe 2 is connected with the flange disk 7 of the other end of injected hole 28.In the outlet of grouting pump 5
Slurries servo-control system 4 is set, slurry flow, pressure and measuring density system 3 are set on high-pressure slip-casting flexible pipe 2.
In the present embodiment, base, grouting test inner casing and grouting test outer shell use high strength steel (specification Q235
~355) make.Base diameter is 800~900mm, is highly 300~400mm；Grouting test inner casing a diameter of 500~
700mm, wall thickness are 10~20mm, are highly 500~600mm；A diameter of 800~the 900mm of grouting test outer shell, wall thickness be 20~
30mm, it is highly 500~600mm, the spacing in grouting test between outer shell is 30~60mm；High-strength bolt strength grade is
8.8~10.9, diameter of bolt hole is 20~28mm；The annular notches width of base is 10~20mm, and depth is 100~200mm.
A diameter of 30~the 30mm of injected hole of base, total length are 400~450mm.A diameter of 6~the 8mm of grouting tube, wall thickness be 1~
2mm, length are 450~550mm；A diameter of 3~the 5mm of extravasating hole, spacing are 10~20mm, and extravasating hole presses the uniform cloth of blossom type
Put；Slurries gathered trough lays 6~8 circles along slip casting inner cylinder length direction at equal intervals, and groove depth is 10~20mm, and fluting is wide
It is 30~50mm to spend for 20~30mm, spacing；Plasma discharge steam vent completely penetrates through grouting test inner casing, a diameter of 8~10mm, spacing
For 40~50mm, plasma discharge steam vent is arranged in the center in the middle part of slurries gathered trough.
The rated pressure of external spring micro-open type safety valve can be divided into 3 grades, i.e. 0~20MPa, 20~40MPa, 40~
60MPa；Blast pipe and the slurry pipe that overflows use seamless steel pipe, a diameter of 8~10mm, and wall thickness is 2~3mm, and length is 15~20mm；Every
The rated pressure of diaphragm pressure table can also be divided into 3 grades, i.e. 0~20MPa, 20~40MPa, 40~60MPa.
High-pressure slip-casting hose diameter is 20~30mm, and wall thickness is 3~6mm；Flow, pressure and measuring density system are by flow
Sensor, pressure sensor, density sensor composition, the range of flow sensor is 0~3L/min, resolution ratio 0.001L/
Min, error are ± 0.5%；The range of pressure sensor is 20~30MPa, and resolution ratio 0.01MPa, error is ± 0.5%；
The range of density sensor is 0~3g/cm3, resolution ratio 0.001g/cm3, error is ± 0.5%.Slurries pilot valve system
The range of system is 0~2L/min, and resolution ratio 0.001L/min, error is ± 0.5~1.0%；Grouting pump can provide 0~
The grouting pressure of 3 ranks such as 20MPa, 20~40MPa, 40~60MPa, the capacity of electronic cement stirring station is 30~50L；With
Upper parameter can suitably be adjusted according to Practical Project situation.
Using the hypotonicity coal and rock splitting infiltration coupling grouting test method of above-mentioned experimental rig, the test method bag
Include following steps：
Step 1：Pressure testing machine is connected with top sealing pressure head 19, starts pressure testing machine, is sealed and pressed by top
First 19 pairs of coal and rock samples 26 apply predetermined shaft pressure, during axle pressure is applied, by blast pipe 13 by grouting test inner casing
16 and circular passage 18 in gas discharge, by grouting test inner casing 16, grouting test outer shell 17 and make densification blocking 20 right
Coal and rock sample 26 provides hoop constraint power；
Step 2：A certain proportion of cement and water are put into electronic cement stirring station 6 and mixed, uniformly after mixing
Slurries be transported in the injected hole 1 and injected hole 28 of base 1 by grouting pump 5, high-pressure slip-casting flexible pipe 2, then pass through
Extravasating hole 24 in grouting tube 23 extrudes to coal and rock sample 26 to spread, and the grouting pressure of grouting pump 5 is less than hypotonicity coal
The cleavage fracture stress of rock mass, now can be with until high-pressure slip-casting inside hose slurry flow is zero or slurry reflux phenomenon occur
Judge that coal and rock sample 26 does not eat slurry substantially；
Step 3：The grouting pressure of grouting pump 5 is stepped up to the cleavage fracture stress of hypotonicity coal and rock, by coal and rock
The aperture increase of the microfissure of sample 26, makes slurries continue to be injected into coal and rock sample 26, during implementation steps three,
Constantly come together in slurries gathered trough 21 by the gas of coal and rock sample 26 and unnecessary slurries, and pass through the row of plasma discharge steam vent 22
Into circular passage 18, with the raising of grouting pressure, slurries constantly gather and increase and be filled with whole annular in circular passage 18
Passage 18, the internal pressure of circular passage 18 is continued to increase, set when the internal pressure of passage 18 exceedes with external air pressure difference
During level pressure force value, spring micro-open type safety valve 11 is automatically opened up, and pipe 10 is starched by the gas and slurries in circular passage 18 by overflowing
It is discharged in slurries container containing 15, to ensure the lasting progress of slip casting.
During implementation steps two and step 3, pass through the real-time dynamic of slurry flow, pressure and measuring density system 3
Flow, pressure and the density of slurries are monitored, so as to ensure the easy property of slurries and effective control of grouting pressure, is realized to slip casting
The Precise control of journey.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- A kind of 1. hypotonicity coal and rock splitting infiltration coupling grouting experimental rig, it is characterised in that：Including base (1), slip casting Pump (5), electronic cement stirring station (6), grouting test inner casing (16), grouting test outer shell (17), grouting tube (23), coal and rock Sample (26)；The lower end of the grouting test inner casing (16) is connected with base (1), and the upper end of grouting test inner casing (16) is provided with can The top sealing pressure head (19) of activity, the grouting test outer shell (17) are located on the outside of grouting test inner casing (16), slip casting The lower end of experiment outer shell (17) is connected with base (1), and the upper end of grouting test outer shell (17) is provided with annular pressure head (27), slip casting examination Test formation circular passage (18) between inner casing (16), grouting test outer shell (17), base (1) and annular pressure head (27), slip casting examination The top for testing outer shell (17) is provided with overflow slurry pipe (10) and blast pipe (13), and excessive slurry pipe (10) and blast pipe (13) lead to annular respectively Road (18) connects, and the coal and rock sample (26) is filled in grouting test inner casing (16) inside, in coal and rock sample (26) The heart sets grouting tube (23), is evenly equipped with extravasating hole (24) on grouting tube (23), the base (1) offers base slip casting Hole, base injected hole are connected with grouting tube (23) lower end, and the electronic cement stirring station (6) and the entrance of grouting pump (5) connect Logical, the outlet of grouting pump (5) is connected by high-pressure slip-casting flexible pipe (2) with base injected hole.
- 2. a kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig according to claim 1, its feature exist In：Multiple densification blockings (20) that allow symmetrically are arranged in the circular passage (18).
- 3. a kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig according to claim 1 or 2, its feature It is：The inwall of the grouting test inner casing (16) is arranged at intervals with some annular slurries gathered troughs (21), slurries gathered trough (21) plasma discharge steam vent (22) is offered in the middle part of, plasma discharge steam vent (22) connects with circular passage (18).
- 4. a kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig according to claim 3, its feature exist In：The outlet of the grouting pump (5) sets slurries servo-control system (4), and slurry stream is set on the high-pressure slip-casting flexible pipe (2) Amount, pressure and measuring density system (3).
- 5. a kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig according to claim 4, its feature exist In：Spring micro-open type safety valve (11) and diaphragm pressure gage (12) are set on the excessive slurry pipe (10)；The blast pipe (13) Upper setting gas exhausting valve (14)；The lower section of the excessive slurry pipe (10) sets slurries container containing (15).
- 6. a kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig according to claim 5, its feature exist In：In annular notches on the lower end inserted base (1) of the grouting test inner casing (16)；The grouting test outer shell (17) Lower end is fixedly connected with base (1) by high-strength bolt (9).
- 7. a kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig according to claim 6, its feature exist In：The base injected hole includes injected hole one (25) and injected hole two (8), and injected hole one (25) is located at the center of base (1) Position, grouting tube (23) lower end are inserted in injected hole one (25), and injected hole two (8) one end connects with injected hole one (25), note Slurry hole two (8) other end extends to base (1) side and is provided with flange disk (7), high-pressure slip-casting flexible pipe (2) and interface method Blue disk (7) is connected.
- 8. a kind of hypotonicity coal and rock splitting infiltration coupling grouting test method using experimental rig described in claim 7, Characterized in that, the test method comprises the following steps：Step 1：Pressure testing machine is connected with top sealing pressure head (19), starts pressure testing machine, pressure head is sealed by top (19) predetermined shaft pressure is applied to coal and rock sample (26), during axle pressure is applied, by blast pipe (13) by grouting test Gas discharge in inner casing (16) and circular passage (18), by grouting test inner casing (16), grouting test outer shell (17) and allows Densification blocking (20) provides hoop constraint power to coal and rock sample (26)；Step 2：A certain proportion of cement and water are put into electronic cement stirring station (6) and mixed, it is uniformly mixed Slurries are transported to the injected hole one (25) and injected hole of the base of base (1) by grouting pump (5), high-pressure slip-casting flexible pipe (2) In two (8), then extruded and spread to coal and rock sample (26) by the extravasating hole (24) in grouting tube (23), grouting pump (5) Grouting pressure is less than the cleavage fracture stress of hypotonicity coal and rock, until the internal slurry flow of high-pressure slip-casting flexible pipe (2) be zero or There is slurry reflux phenomenon；Step 3：The grouting pressure of grouting pump (5) is stepped up to the cleavage fracture stress of hypotonicity coal and rock, coal and rock is tried The aperture increase of the microfissure of sample (26), makes slurries continue to be injected into coal and rock sample (26).
- A kind of 9. hypotonicity coal and rock splitting infiltration coupling grouting test method according to claim 8, it is characterised in that： During implementation steps three, slurries gathered trough is constantly come together in by the gas of coal and rock sample (26) and unnecessary slurries (21) in, and it is discharged to by plasma discharge steam vent (22) in circular passage (18), with the raising of grouting pressure, circular passage (18) The constantly accumulation of middle slurries increases and is filled with whole circular passage (18), when circular passage (18) internal pressure and external air pressure When difference exceedes setup pressure value, spring micro-open type safety valve (11) is automatically opened up, and (10) are managed by circular passage by the slurry that overflows (18) gas and slurries in are discharged in slurries container containing (15), to ensure the lasting progress of slip casting.
- 10. a kind of hypotonicity coal and rock splitting infiltration coupling grouting test method, its feature exist according to claim 8 In：During implementation steps two and step 3, by slurry flow, pressure and measuring density system (3), dynamic is supervised in real time Flow, pressure and the density of slurries are surveyed, so as to ensure the easy property of slurries and effective control of grouting pressure, is realized to slip casting process Precise control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658405.8A CN107525541B (en) | 2017-08-04 | 2017-08-04 | Low-permeability coal-rock mass splitting permeation coupling grouting test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658405.8A CN107525541B (en) | 2017-08-04 | 2017-08-04 | Low-permeability coal-rock mass splitting permeation coupling grouting test device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107525541A true CN107525541A (en) | 2017-12-29 |
| CN107525541B CN107525541B (en) | 2020-01-10 |
Family
ID=60680562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710658405.8A Active CN107525541B (en) | 2017-08-04 | 2017-08-04 | Low-permeability coal-rock mass splitting permeation coupling grouting test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107525541B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444888A (en) * | 2018-04-17 | 2018-08-24 | 中国矿业大学 | A kind of fractured coal and rock osmotic grouting visual test device and its test method |
| CN108919348A (en) * | 2018-09-19 | 2018-11-30 | 东北大学 | A kind of crack rock intelligence slip casting TT&C system and implementation method |
| CN109211754A (en) * | 2018-09-29 | 2019-01-15 | 中国矿业大学 | A kind of Permeability Oe Coal And Porous Rock And Fractured Rock measurement device and method |
| CN109752228A (en) * | 2019-01-22 | 2019-05-14 | 北京交通大学 | The sample sample preparation device and method of analog composite stratum and reserved injected hole |
| CN110044714A (en) * | 2019-05-14 | 2019-07-23 | 西安科技大学 | A kind of coal petrography analog material slip casting splitting three-dimensional simulation pilot system |
| CN110261202A (en) * | 2019-07-25 | 2019-09-20 | 泉州装备制造研究所 | A kind of grouting sample preparation device |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001040650A (en) * | 1999-07-29 | 2001-02-13 | Kansai Tlo Kk | Grouting construction method |
| JP2004197305A (en) * | 2002-12-16 | 2004-07-15 | Tokyo Electric Power Co Inc:The | Pulsation pressure amplitude control mechanism and pulsation pressure amplitude control method in grouting system, as well as pulsation generating apparatus |
| CN101509852A (en) * | 2009-03-18 | 2009-08-19 | 中国矿业大学 | Test methods for acquiring thick wall cylinder sample ring fracture |
| CN204301779U (en) * | 2014-12-08 | 2015-04-29 | 北京市勘察设计研究院有限公司 | A kind of indoor deep hole grouting multi-parameter combined measuring instrument |
| CN105842430A (en) * | 2016-06-02 | 2016-08-10 | 天津大学 | Test method and test device for transverse microorganism cement grouting |
-
2017
- 2017-08-04 CN CN201710658405.8A patent/CN107525541B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001040650A (en) * | 1999-07-29 | 2001-02-13 | Kansai Tlo Kk | Grouting construction method |
| JP2004197305A (en) * | 2002-12-16 | 2004-07-15 | Tokyo Electric Power Co Inc:The | Pulsation pressure amplitude control mechanism and pulsation pressure amplitude control method in grouting system, as well as pulsation generating apparatus |
| CN101509852A (en) * | 2009-03-18 | 2009-08-19 | 中国矿业大学 | Test methods for acquiring thick wall cylinder sample ring fracture |
| CN204301779U (en) * | 2014-12-08 | 2015-04-29 | 北京市勘察设计研究院有限公司 | A kind of indoor deep hole grouting multi-parameter combined measuring instrument |
| CN105842430A (en) * | 2016-06-02 | 2016-08-10 | 天津大学 | Test method and test device for transverse microorganism cement grouting |
Non-Patent Citations (1)
| Title |
|---|
| 文圣勇: "深埋煤岩体注浆加固效应与控制参数研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444888A (en) * | 2018-04-17 | 2018-08-24 | 中国矿业大学 | A kind of fractured coal and rock osmotic grouting visual test device and its test method |
| CN108919348A (en) * | 2018-09-19 | 2018-11-30 | 东北大学 | A kind of crack rock intelligence slip casting TT&C system and implementation method |
| CN109211754A (en) * | 2018-09-29 | 2019-01-15 | 中国矿业大学 | A kind of Permeability Oe Coal And Porous Rock And Fractured Rock measurement device and method |
| CN109211754B (en) * | 2018-09-29 | 2023-10-31 | 中国矿业大学 | Coal rock permeability measuring device and method |
| CN109752228A (en) * | 2019-01-22 | 2019-05-14 | 北京交通大学 | The sample sample preparation device and method of analog composite stratum and reserved injected hole |
| CN109752228B (en) * | 2019-01-22 | 2024-03-01 | 北京交通大学 | Sample preparation device and method for simulating composite stratum and reserving grouting holes |
| CN110044714A (en) * | 2019-05-14 | 2019-07-23 | 西安科技大学 | A kind of coal petrography analog material slip casting splitting three-dimensional simulation pilot system |
| CN110261202A (en) * | 2019-07-25 | 2019-09-20 | 泉州装备制造研究所 | A kind of grouting sample preparation device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107525541B (en) | 2020-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107525541A (en) | A kind of hypotonicity coal and rock splitting infiltration coupling grouting experimental rig and method | |
| CN105780793B (en) | A kind of high artesian stratum Foundation Pit Pouring emergency processing method | |
| CN108444888A (en) | A kind of fractured coal and rock osmotic grouting visual test device and its test method | |
| CN205483943U (en) | Experimental device for mud dipes stratum formation sludge -biofilm among simulation slurry shield | |
| CN107489432A (en) | Tunnel support grouting equipment and its grouting method | |
| CN207554023U (en) | Hydrate recovery well cased hole gravel packing analogue system | |
| CN103195468A (en) | System process for conducting efficient strengthened extraction in surrounding rock | |
| CN109882183A (en) | A kind of rich water loose crushing coal and rock grouting reinforcement experimental provision and effect evaluation method | |
| CN206667278U (en) | Lava crack Tunnel gushing treatment constructing structure | |
| CN105181927B (en) | The hypotonic coal seam hydraulic fracture simulation experiment method of multi- scenarios method | |
| CN110359898A (en) | A kind of fracture-type reservoir cracks seam plugging material selection method in advance | |
| CN206627405U (en) | The double embolism original position injection pressure water penetration detectors of expansion type | |
| CN206625831U (en) | A kind of Karst grouting automatic monitored control system | |
| CN201902206U (en) | Leakage stopping simulation evaluation device for well drilling in stress-sensitive formation | |
| CN107085085A (en) | Hydro-thermal power THM coupling manual pipe jacking disturbed soil grouting test device and method | |
| CN114152510A (en) | Test device and test method for water-rich broken rock stratum moving water grouting reinforcement model | |
| CN113236217A (en) | Device and method for permeability increasing of low-permeability coal seam by using high-power ultrasonic waves | |
| CN109187309A (en) | A kind of experimental rig and test method of the weak cementing fragmented rock body of study of fault | |
| CN106351606B (en) | The method for improving sealing of hole effect based on wall-rock crack holing structure | |
| CN106194161A (en) | A kind of based on freezing to block the method that rock mass high pressure crevice water measures coal-bed gas pressure | |
| CN108756910A (en) | A kind of intelligent early-warning formula earth pressure balanced shield, EPBS pre-grouting device and construction method | |
| CN105545290A (en) | Rotary-jet-grouting solidifying hole sealing simulation test platform and test method | |
| CN110080714A (en) | The construction technology of ground grout leak stopping in Grouting engineering is isolated in a kind of overlying strata | |
| CN107956482B (en) | Deicing, grouting and crack-stopping system and method for tunnel surrounding rock cracks in quaternary frozen area | |
| CN114108609A (en) | Goaf multistage subsection precise filling deep pile-forming construction process and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |