CN207351871U - A kind of grouting for water plugging simulation test device - Google Patents
A kind of grouting for water plugging simulation test device Download PDFInfo
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- CN207351871U CN207351871U CN201721498102.6U CN201721498102U CN207351871U CN 207351871 U CN207351871 U CN 207351871U CN 201721498102 U CN201721498102 U CN 201721498102U CN 207351871 U CN207351871 U CN 207351871U
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- chamber
- grouting
- water plugging
- coal
- tracheae
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Abstract
The utility model discloses a kind of grouting for water plugging simulation test device, including chamber, grouter, Grouting Pipe, stress loading system, methane gas cylinder, graduated cylinder, fractured coal and rock intensity can be bonded as again using the method using grouting and reinforcing of grouting and reinforcing by unified entirety, a large amount of cracks in coal body are blocked, are the most effective technological means for administering underground Geology disaster.The utility model is simple, convenient, can simulate the actual grouting for water plugging effect under coal output layer stressing conditions in laboratory conditions.
Description
Technical field
It the utility model is related to Grouting technical field, and in particular to one kind simulation coal seam grouting for water plugging experimental provision.
Technical background
With the increase of China's coal-mine mining depth, crustal stress suffered by coal seam gradually increases, and thus causes deep fractures coal quality
Soft, a large amount of holes of development, crack in coal body, cause the reduction of coal body bearing capacity, it is difficult to keep out in high stress impact and coal seam
The influence of gas pressure effect, easily triggers coal and gas prominent accident；Leaking out for crack also results in coal body in coal body at the same time
Spontaneous combustion, hidden trouble is brought to downhole safety production.Fractured coal and rock intensity can be bonded again using the method for grouting and reinforcing
For unified entirety, a large amount of cracks in coal body are blocked, are the most effective technological means for administering underground Geology disaster.Close at present
Experimental provision in terms of grouting for water plugging is less, can not simulate true coal seam grouting for water plugging situation in laboratory conditions, it is difficult to
Rational evaluation is made to the plugging effect of different plugging materials.
Utility model content
The utility model aim provides a kind of grouting for water plugging analogue experiment installation, which is simple and convenient to operate, energy
Enough overcome the shortcomings of in above technical background, grouting for water plugging experiment can be carried out in laboratory conditions, simulate down-hole coal bed slip casting
Situation, makes an appraisal the plugging effect of different grouting for water plugging materials.
In order to solve the above technical problems, the present invention adopts the following technical scheme that a kind of grouting for water plugging analogue experiment installation, bag
Include chamber, grouter, Grouting Pipe, stress loading system, methane gas cylinder, graduated cylinder；Grouting Pipe is equipped with chamber, Grouting Pipe is led to
Sebific duct is crossed with grouter to be connected, chamber air inlet is connected by tracheae with methane gas cylinder, chamber gas outlet by tracheae with
Graduated cylinder connects, and stress loading system is made of multiple hydraulic cylinders, can apply load to the top plate of chamber.Pass through above technical side
Case can simulate coal output layer slip casting plugging effect under true stress condition in laboratory conditions, by before and after contrasting grouting for water plugging
Coal dust permeability in chamberkChange evaluate the plugging effects of different plugging materials.
Above-mentioned technical proposal is used, the invention has the advantages that：（1）The device is easy to operate, can test
Analog study slip casting process under the conditions of room；（2）Slip casting of the coal output layer under stressing conditions can be simulated by stress loading system to imitate
Fruit；（3）Can be with the plugging effect of rational evaluation plugging material by the change for calculating the forward and backward coal dust permeability of grouting for water plugging.
Brief description of the drawings
Fig. 1 grouting for water plugging analogue experiment installation structure diagrams.
Fig. 2 chamber front views.
Fig. 3 chamber top views.
8 structure diagram of Fig. 4 coaming plates 7 and coaming plate.
Embodiment
In order to realize the technical characteristics of the utility model and effect, refering to Fig. 1 ~ Fig. 4, with reference to specific implementation content, into one
The operating method of the utility model is described in detail in step.
A kind of grouting for water plugging analogue experiment installation described in the utility model gives realization using following technical scheme：
A kind of grouting for water plugging analogue experiment installation include chamber 1, stress loading system 31, Grouting Pipe 2, slip casting valve 10, sebific duct 11,
Grouter 12, air inlet valve 20, tracheae 21, inlet pressure table 22, pressure reducing valve 23, gas gas cylinder 24, gas outlet valve 40,
Tracheae 42, gas outlet valve 41, graduated cylinder 43；Chamber 1 is made of top plate 3, bottom plate 4, coaming plate 5, coaming plate 6, coaming plate 7 and coaming plate 8,
Coaming plate 5 and coaming plate 6 are fixed with four identical screw rods 9 respectively, and coaming plate 7 and 8 top of coaming plate set sliding slot so that top plate 3 can go up,
Lower movement, and coaming plate 7 is equipped with injected hole 71, venthole 72, coaming plate 8 is equipped with air admission hole 81；Grouting Pipe is equipped with chamber 1
2, Grouting Pipe 2 is connected by sebific duct 11 with grouter 12, and sebific duct 11 is equipped with grouting valve 10；Air inlet 81 on coaming plate 8 passes through
Tracheae 21 is connected with methane gas cylinder 24, and air inlet valve 20, inlet pressure gauge 22 and pressure reducing valve 23 are respectively equipped with tracheae 21；Enclose
Gas outlet 72 on plate 7 is connected by tracheae 42 with graduated cylinder 43, and tracheae 21 is equipped with gas outlet valve 40 and gas outlet pressure gauge
41；Chamber 1 is equipped with stress loading system 31, and stress loading system is made of multiple hydraulic cylinders, can be to the top of chamber 1
Plate 3 applies uniform load.
Further, chamber is 1m × 0.5m × 0.5m（Length × width × height）Cuboid rigid die, by top plate, bottom
Plate and coaming plate are formed, and top plate can slide up and down, and the coaming plate of surrounding is detachable, facilitates coal sample depanning.
Further, Grouting Pipe is the pvc pipe of 1m, and aperture 20mm, it is 8mm's that Grouting Pipe front end, which processes several apertures,
Presbyopia, is uniformly spread in coal seam around with ensuring that plugging material slurries can be flowed out from presbyopia.
Further, coal dust permeability in chamberkCalculation formula is：
In formula,kFor the permeability of coal dust in chamber, unit mD；μFor gas viscosity, unit 10-6mPa·s；LFor experiment
Case length, unit cm；p 0For atmospheric pressure, units MPa；Q 0For gas flow, unit cm3/s；AFor chamber lateral area, unit
cm²；p 1、p 2Respectively air inlet and gas outlet pressure, units MPa.
The specific sealing of hole operating procedure of the utility model is：
Step 1, chamber 1 is assembled first, is fixed bottom plate 4 and surrounding coaming plate by screw rod 9, top plate 3 can go up,
Lower movement；Then the place mat coal dust into chamber, and compaction in layers, to simulate true coal seam effect, and the pre-buried note in coal dust
Starch pipe 2；The top plate 3 of chamber 1 is loaded using stress loading system 31, simulates true coal seam stressed effect state.Beat
Drive gas port valve 20 and gas outlet valve 40 into, gas injection is carried out to chamber 1 using methane gas cylinder 24, and by adjusting pressure reducing valve
23 adjust inlet pressure, calculate gas flow according to liquid level change in graduated cylinder 43, and tried before calculating grouting for water plugging
Coal dust permeability in tryoff.
Step 2, before slip casting work, air inlet valve 20 and gas outlet valve 40 are first shut off, by sebific duct 11 by slip casting
Pipe 2 is connected with grouter 11, opens slip casting valve 10, and the good plugging material slurries of pre-coordination are injected examination using grouter 12
In coal dust in tryoff 1, slip casting closure is carried out to coal dust；After Cementer is made, slip casting valve 10 is closed, and by chamber 1
It is placed in and stores under room temperature, until plugging material is fully cured.
Step 3, after slurries are fully cured in coal seam, chamber air inlet valve 20 and 40, gas outlet valve, profit are opened
Gas injection is carried out to chamber 1 with methane gas cylinder 24, inlet pressure is controlled by adjusting pressure reducing valve 23, according to liquid level in graduated cylinder 43
Height change calculates gas flow, and calculates after grouting for water plugging coal dust permeability in chamber.
Step 4, by contrasting the Assessment of Changes difference plugging material of coal dust permeability in the forward and backward chamber of grouting for water plugging
Actual plugging effect.
The foregoing is merely the preferable possible embodiments of the utility model, non-therefore limitation the utility model patent
Protection domain.In addition to the implementation, the utility model can also have other embodiment.It is all to use equivalent substitution or equivalent change
The technical solution to be formed is changed, is all fallen within the protection domain of the requires of the utility model.Technology of the utility model without description is special
Sign can realize that details are not described herein by or using the prior art.
Claims (3)
- A kind of 1. grouting for water plugging simulation test device, it is characterised in that：Including chamber, grouter, Grouting Pipe, stress loading system System, methane gas cylinder, graduated cylinder；Grouting Pipe is equipped with the chamber, Grouting Pipe is connected by sebific duct with grouter, the chamber Air inlet is connected by tracheae with methane gas cylinder, and the chamber gas outlet is connected by tracheae with graduated cylinder, stress loading system It is made of multiple hydraulic cylinders.
- 2. grouting for water plugging simulation test device according to claim 1, it is characterised in that：Chamber by top plate, bottom plate and Surrounding coaming plate is formed, and two gusset plate of chamber is equipped with sliding slot, tests the upper and lower fixation of roof box and upper plate can move up and down, Surrounding coaming plate and bottom plate are detachable, facilitate coal sample depanning, and experiment roof box can be applied in load by stress loading system, The real stress in coal seam can be simulated.
- 3. grouting for water plugging simulation test device according to claim 1, it is characterised in that：Chamber air inlet passes through tracheae It is connected with methane gas cylinder, chamber gas outlet is connected by tracheae with graduated cylinder, is carried out gas injection to chamber using methane gas cylinder, is led to Decompression valve regulation inlet pressure is overregulated, gas flow can obtain according to liquid level change in graduated cylinder, thus can calculate The permeability of coal dust in chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721498102.6U CN207351871U (en) | 2017-11-11 | 2017-11-11 | A kind of grouting for water plugging simulation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721498102.6U CN207351871U (en) | 2017-11-11 | 2017-11-11 | A kind of grouting for water plugging simulation test device |
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| Publication Number | Publication Date |
|---|---|
| CN207351871U true CN207351871U (en) | 2018-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721498102.6U Expired - Fee Related CN207351871U (en) | 2017-11-11 | 2017-11-11 | A kind of grouting for water plugging simulation test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196213A (en) * | 2019-05-15 | 2019-09-03 | 三峡大学 | A kind of visualized experiment device and method for study of rocks crack induction type grouting parameter |
| CN111505237A (en) * | 2020-05-28 | 2020-08-07 | 太原理工大学 | Residual coal re-mining broken coal rock mass grouting modification test device and test method |
| CN112504936A (en) * | 2020-11-30 | 2021-03-16 | 中国地质大学（北京） | Testing device and testing method for simulating and researching permeability of deep coal bed methane |
| CN114295788A (en) * | 2021-12-30 | 2022-04-08 | 重庆大学 | Device and method for simulating advance plugging test of harmful gas in tunnel surrounding rock |
-
2017
- 2017-11-11 CN CN201721498102.6U patent/CN207351871U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196213A (en) * | 2019-05-15 | 2019-09-03 | 三峡大学 | A kind of visualized experiment device and method for study of rocks crack induction type grouting parameter |
| CN111505237A (en) * | 2020-05-28 | 2020-08-07 | 太原理工大学 | Residual coal re-mining broken coal rock mass grouting modification test device and test method |
| CN112504936A (en) * | 2020-11-30 | 2021-03-16 | 中国地质大学（北京） | Testing device and testing method for simulating and researching permeability of deep coal bed methane |
| CN112504936B (en) * | 2020-11-30 | 2021-12-03 | 中国地质大学（北京） | Testing device and testing method for simulating and researching permeability of deep coal bed methane |
| CN114295788A (en) * | 2021-12-30 | 2022-04-08 | 重庆大学 | Device and method for simulating advance plugging test of harmful gas in tunnel surrounding rock |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 Termination date: 20181111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |