CN207278295U - Coal mine gas extraction drill hole sealing of hole effect simulation experimental provision - Google Patents
Coal mine gas extraction drill hole sealing of hole effect simulation experimental provision Download PDFInfo
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- CN207278295U CN207278295U CN201721020134.5U CN201721020134U CN207278295U CN 207278295 U CN207278295 U CN 207278295U CN 201721020134 U CN201721020134 U CN 201721020134U CN 207278295 U CN207278295 U CN 207278295U
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- Prior art keywords
- hole
- sealing
- pipe
- experimental provision
- coal dust
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Abstract
The utility model discloses a kind of coal mine gas extraction drill hole sealing of hole effect simulation experimental provision, belong to colliery experimental provision technical field.The utility model includes borehole wall simulation pipe, stock device and additional testing device；Insertion hole sealing tube in the borehole wall simulation pipe, the both ends of hole sealing tube form seal cavity equipped with rubber stopper, and being made on any rubber stopper has injected hole；Stock device includes spice bucket and the air driven pump being pumped into the sealing of hole slurries in spice bucket in the seal cavity, and Grouting Pipe enters in the seal cavity through the injected hole；There is additional testing device on the outer wall of seal cavity, additional testing device includes top board and lower plate, and pressure-regulating device is housed between top board and lower plate, and lower plate upper vertical is equipped with coal dust column.The utility model can carry out the physical analogy of sealing of hole effect under different sealing material and sealing of hole pressure conditions.
Description
Technical field
A kind of mash gas pumping drilling sealing of hole effect experiment device is the utility model is related to, belongs to mash gas pumping drilling technology neck
Domain.
Background technology
Gas pumping is just classified as the important measures for administering coal mine gas disaster by China, and highly gassy mine and coal with watt
This projecting mine is promoted.Development of the gas pumping technology in China after decades, achieves significant progress, is administering colliery
Play the role of during gas and prevention gas accident vital.However, the gas of many mines in China is taken out at present
It is still not up to standard to adopt concentration, a major reason is exactly that mash gas pumping drilling sealing of hole is ineffective.Therefore, sealing of hole matter how is improved
Amount, enhancing gas pumping effect, are a problem to be solved, and the important guarantee of mine safety production.
The content of the invention
Part in order to overcome the above-mentioned deficiencies of the prior art, the utility model provide a kind of coal mine gas extraction drill hole sealing of hole
Effect simulation experimental provision, can carry out the physical analogy of sealing of hole effect under different sealing material and sealing of hole pressure conditions.
The utility model is achieved by the following technical solution：A kind of coal mine gas extraction drill hole sealing of hole effect simulation is real
Experiment device, including borehole wall simulation pipe, stock device and additional testing device；Insertion sealing of hole in the borehole wall simulation pipe
Pipe, the both ends of hole sealing tube are equipped with rubber stopper, and rubber stopper plug is simulated between inside pipe wall and sealing of hole pipe outer wall, at two in borehole wall
Seal cavity is formed between rubber stopper, being made on any rubber stopper has communication seals cavity and extraneous injected hole；The pump
Material device includes spice bucket and the air driven pump being pumped into the sealing of hole slurries in spice bucket in the seal cavity, one end of air driven pump
Stretched into by suction pipe in the spice bucket, the other end connection Grouting Pipe of air driven pump, Grouting Pipe enters institute through the injected hole
State in seal cavity；Being made on the outer wall of the seal cavity has instrument connection, and the additional testing device is installed on instrument connection,
Additional testing device includes top board and lower plate, and pressure-regulating device, lower plate top are housed between top board and lower plate
Vertical that coal dust column is housed, coal dust column covering is equipped with coal dust column filling pipe, and the bottom of lower plate is equipped with connection instrument connection and coal dust column
Instrument connection seal nipple, upper pressure head is fixed with the top board, upper pressure head is stretched into coal dust column filling pipe and is pressed in
Coal dust column upper end.
Further, check valve is housed in the Grouting Pipe.
Further, the pressure-regulating device is mounted in four sets of adjusting bolt nut groups between top board and lower plate
Part.
Further, the coal dust column filling pipe is the pipe being formed by connecting by two semi-circular tubes by bolt and nut component.
Further, the seam crossing of described two semi-circular tubes is equipped with gasket.
Further, the instrument connection is tapped raised hole, and the instrument connection seal nipple is coordinated with instrument connection
Hollow thread head.
The beneficial effects of the utility model are：The utility model analogue experiment installation simulates pipe to simulate by borehole wall
Borehole wall, hole sealing tube both ends installation rubber stopper simultaneously fill in borehole wall simulation pipe, sealing of hole pipe outer wall and borehole wall simulation pipe
Inner wall forms seal cavity.The perforate on rubber stopper, Grouting Pipe stretches into seal cavity by institute's hole-opening, to prevent slurries from falling
Stream, check valve is accessed on the pipeline of Grouting Pipe.Under pneumatic pumping action, the sealing of hole slurries in spice bucket are entered by Grouting Pipe
Seal cavity, slurries are full of seal cavity.
To investigate borehole sealing effect, simulate perforate on pipe in borehole wall and attachment device is installed.The attachment device leads to
Four bolts are crossed to the coal dust pressurization in cavity, to simulate the stress of the coal body near hole wall.After seal cavity is full of, slurry
Liquid enters attachment device under pressure, different pressures, different slurry contents, and under different slip casting time conditions, slurries are deep
The distance of coal dust is different, the leakproofness of drilling also just difference.Slurries go deep into the coal dust bigger, slurries of distance and coal dust is cementing more
Good, sealing of hole effect is better.
Brief description of the drawings
The utility model is further illustrated below according to drawings and examples.
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model additional testing apparatus structure schematic diagram；
Fig. 3 is the A-A profiles of Fig. 2；
Fig. 4 is additional testing device bottom view.
In figure, 1, borehole wall simulation pipe, 1-1, seal cavity, 1-2, instrument connection, 2, hole sealing tube, 2-1, rubber stopper, 2-
2nd, injected hole, 3, Grouting Pipe, 4, check valve, 5, air driven pump, 5-1, suction pipe, 6, spice bucket, 7, additional testing device, 8, adjust spiral shell
Bolt nut assembly, 9, coal dust column, 10, upper pressure head, 11, gasket, 12, semi-circular tube, 13, top board, 14, lower plate, 15, survey
Prospect hole seal nipple.
Embodiment
A kind of coal mine gas extraction drill hole sealing of hole effect simulation experimental provision as shown in Figure 1-Figure 3, including borehole wall
Simulate pipe 1, stock device and additional testing device 7；Insertion hole sealing tube 2 in the borehole wall simulation pipe 1, the two of hole sealing tube 2
End is equipped with rubber stopper 2-1, and rubber stopper 2-1 is filled between borehole wall simulates 2 outer wall of 1 inner wall of pipe and hole sealing tube, in two rubber
Seal cavity 1-1 is formed between plug 2-1, being made on any rubber stopper 2-1 has communication seals cavity 1-1 and extraneous injected hole
2-2；The stock device includes spice bucket 6 and is pumped into the sealing of hole slurries in spice bucket 6 pneumatic in the seal cavity 1-1
Pump 5, one end of air driven pump 5 is stretched into the spice bucket 6 by suction pipe 5-1, the other end connection Grouting Pipe 3 of air driven pump 5, slip casting
Pipe 3 enters in the seal cavity 1-1 through the injected hole 2-2；Being made on the outer wall of the seal cavity 1-1 has instrument connection
1-2, the additional testing device 7 are installed on instrument connection 1-2, and additional testing device 7 includes top board 13 and lower plate 14, on
Pressure-regulating device is housed, 14 upper vertical of lower plate is equipped with coal dust column 9,9 covering of coal dust column between pressing plate 13 and lower plate 14
Fill and manage equipped with coal dust column, instrument connection seal nipple 15 of the bottom equipped with connection instrument connection 1-2 with coal dust column 9 of lower plate 14,
Upper pressure head 10 is fixed with the top board 13, upper pressure head 10 stretches into coal dust column filling pipe and is pressed in 9 upper end of coal dust column.
Check valve 4 is housed in the Grouting Pipe 3.
The pressure-regulating device is mounted in four sets of adjusting bolt nut assemblies between top board 13 and lower plate 14
8。
The coal dust column filling pipe is the pipe being formed by connecting by two semi-circular tubes 12 by bolt and nut component.
The seam crossing of described two semi-circular tubes 12 is equipped with gasket 11.
The instrument connection 1-2 is tapped raised hole, and the instrument connection seal nipple 15 is coordinated with instrument connection 1-2
Hollow thread head.
The principle of the utility model is：The utility model analogue experiment installation simulates pipe to simulate drilling by borehole wall
Hole wall, hole sealing tube both ends installation rubber stopper simultaneously fill in borehole wall simulation pipe, sealing of hole pipe outer wall and borehole wall simulation inside pipe wall
Form seal cavity.The perforate on rubber stopper, Grouting Pipe stretches into seal cavity by institute's hole-opening, to prevent slurries from flowing backwards,
Check valve is accessed on the pipeline of Grouting Pipe.Under pneumatic pumping action, the sealing of hole slurries in spice bucket are entered by Grouting Pipe to be sealed
Cavity, slurries are full of seal cavity.To investigate borehole sealing effect, perforate and the additional dress of installation on borehole wall simulation pipe
Put.The attachment device is pressurizeed by four bolts to the coal dust in cavity, to simulate the stress of the coal body near hole wall.It is close
After envelope cavity is full of, slurries enter attachment device, different pressures, different slurry contents, different slip casting times under pressure
Under the conditions of, the distance that slurries go deep into coal dust is different, the leakproofness of drilling also just difference.Slurries go deep into coal dust distance it is bigger,
Slurries are cementing better with coal dust, and sealing of hole effect is better.
Claims (6)
- A kind of 1. coal mine gas extraction drill hole sealing of hole effect simulation experimental provision, it is characterised in that：Simulate and manage including borehole wall （1）, stock device and additional testing device（7）；The borehole wall simulation pipe（1）Interior insertion hole sealing tube（2）, hole sealing tube（2） Both ends rubber stopper is housed（2-1）, rubber stopper（2-1）Plug is simulated in borehole wall and managed（1）Inner wall and hole sealing tube（2）Outer wall it Between, in two rubber stoppers（2-1）Between form seal cavity（1-1）, in any rubber stopper（2-1）Upper making has communication seals chamber Body（1-1）With extraneous injected hole（2-2）；The stock device includes spice bucket（6）With by the sealing of hole slurries in spice bucket (6) It is pumped into the seal cavity（1-1）Interior air driven pump（5）, air driven pump（5）One end pass through suction pipe（5-1）Stretch into the spice bucket （6）It is interior, air driven pump（5）The other end connection Grouting Pipe（3）, Grouting Pipe（3）Through the injected hole（2-2）Into the sealing Cavity（1-1）It is interior；The seal cavity（1-1）Outer wall on make have instrument connection（1-2）, the additional testing device（7）Peace Mounted in instrument connection（1-2）On, additional testing device（7）Including top board（13）And lower plate（14）, top board（13）And bottom Plate（14）Between pressure-regulating device, lower plate are housed（14）Upper vertical is equipped with coal dust column（9）, coal dust column（9）Covering is equipped with Coal dust column filling pipe, lower plate（14）Bottom equipped with connection instrument connection（1-2）With coal dust column（9）Instrument connection seal nipple （15）, the top board（13）On be fixed with upper pressure head（10）, upper pressure head（10）Stretch into coal dust column filling pipe and be pressed in Coal dust column（9）Upper end.
- 2. coal mine gas extraction drill hole sealing of hole effect simulation experimental provision according to claim 1, it is characterised in that：It is described Grouting Pipe（3）It is upper that check valve is housed（4）.
- 3. coal mine gas extraction drill hole sealing of hole effect simulation experimental provision according to claim 1, it is characterised in that：It is described Pressure-regulating device is mounted in top board（13）And lower plate（14）Between four sets of adjusting bolt nut assemblies（8）.
- 4. coal mine gas extraction drill hole sealing of hole effect simulation experimental provision according to claim 1, it is characterised in that：It is described Coal dust column filling pipe is by two semi-circular tubes（12）The pipe being formed by connecting by bolt and nut component.
- 5. coal mine gas extraction drill hole sealing of hole effect simulation experimental provision according to claim 4, it is characterised in that：It is described Two semi-circular tubes（12）Seam crossing gasket is housed（11）.
- 6. coal mine gas extraction drill hole sealing of hole effect simulation experimental provision according to claim 1, it is characterised in that：It is described Instrument connection（1-2）It is tapped raised hole, the instrument connection seal nipple（15）It is and instrument connection（1-2）What is coordinated is hollow Thread head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721020134.5U CN207278295U (en) | 2017-08-15 | 2017-08-15 | Coal mine gas extraction drill hole sealing of hole effect simulation experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721020134.5U CN207278295U (en) | 2017-08-15 | 2017-08-15 | Coal mine gas extraction drill hole sealing of hole effect simulation experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207278295U true CN207278295U (en) | 2018-04-27 |
Family
ID=61984167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721020134.5U Expired - Fee Related CN207278295U (en) | 2017-08-15 | 2017-08-15 | Coal mine gas extraction drill hole sealing of hole effect simulation experimental provision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207278295U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138950A (en) * | 2018-09-17 | 2019-01-04 | 河南工程学院 | The experimental provision and method of microorganism displacement gas under a kind of true triaxial environment |
| CN110107279A (en) * | 2019-04-29 | 2019-08-09 | 淮阴工学院 | A kind of gas sealing of hole ground simulating device |
-
2017
- 2017-08-15 CN CN201721020134.5U patent/CN207278295U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138950A (en) * | 2018-09-17 | 2019-01-04 | 河南工程学院 | The experimental provision and method of microorganism displacement gas under a kind of true triaxial environment |
| CN110107279A (en) * | 2019-04-29 | 2019-08-09 | 淮阴工学院 | A kind of gas sealing of hole ground simulating device |
| CN110107279B (en) * | 2019-04-29 | 2022-05-17 | 淮阴工学院 | Gas hole sealing ground simulation experiment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180427 Termination date: 20180815 |