CN205786605U - A kind of this coal bed gas extraction experimental simulation device - Google Patents
A kind of this coal bed gas extraction experimental simulation device Download PDFInfo
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- CN205786605U CN205786605U CN201620727685.4U CN201620727685U CN205786605U CN 205786605 U CN205786605 U CN 205786605U CN 201620727685 U CN201620727685 U CN 201620727685U CN 205786605 U CN205786605 U CN 205786605U
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- gas
- coal seam
- coal
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- fumer
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- 239000003245 coal Substances 0.000 title claims abstract description 93
- 238000004088 simulation Methods 0.000 title claims abstract description 55
- 238000000605 extraction Methods 0.000 title claims abstract description 24
- 238000005086 pumping Methods 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000005553 drilling Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 claims description 3
- 239000011280 coal tar Substances 0.000 claims description 3
- 238000011835 investigation Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 239000003566 sealing material Substances 0.000 abstract description 6
- 238000005065 mining Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
nullThe utility model discloses a kind of this coal bed gas extraction experimental simulation device，Including experimental box body，Coal seam it is provided with in experimental box body，The upper and lower in coal seam is respectively equipped with base plate and top board，Seam roof is provided with multiple rows of hydraulic cylinder，The top of every discharge opeing cylinder pressure is provided with hydraulic prop support beam，Four sides in coal seam are respectively equipped with the steel plate applying dead load，Steel plate is fixed by steel strut，In the left side in coal seam, expansion box is set，On the right side in coal seam, fumer is set，Expansion box is connected with gas gas cylinder by valve，Fumer is connected with the air inlet of gas compressor by valve，The gas outlet of gas compressor is connected with fumer by valve，Fumer is provided with safety-valve，Electronic flowmeter and electronic manometer it is equipped with at each valve，It is provided with gas drainage system simulation box in the front side in coal seam，It is provided with wire gauze between gas drainage system simulation box and coal seam.Gas pumping situation under different gas pumping methods under coal mining difference ambient stress, the different parameter such as drillable length and sealing material can be simulated, arrange for boring and gas pumping optimization provides foundation.
Description
Technical field
This utility model relates to a kind of gas pumping technology, particularly relates to a kind of this coal bed gas extraction experimental simulation dress
Put.
Background technology
Owing to more and more coal enterprise exploit deep fractures so that work surface gas flowing in coal layer steeply rises, return
Air way and gas at upper corner transfinite again and again, even cause the serious accident such as gas combustion or blast, and mine safety in serious threat
Produce and sustainable development.Solving the preferable method of problem above is gas pumping, but gas pumping is set by experiment at present
Standby restriction laboratory experiment research is less.
Utility model content
The purpose of this utility model is to provide a kind of this coal bed gas extraction experimental simulation device.
The purpose of this utility model is achieved through the following technical solutions:
Of the present utility model coal bed gas extraction experimental simulation device, including experimental box body, sets in described experimental box body
Having coal seam, the upper and lower in described coal seam to be respectively equipped with base plate and top board, described seam roof is provided with multiple rows of hydraulic cylinder, often
The top of discharge opeing cylinder pressure is provided with hydraulic prop support beam, and four sides in described coal seam are respectively equipped with the steel plate applying dead load,
Described steel plate is fixed by steel strut, arranges expansion box in the left side in coal seam, arranges fumer, described gas storage on the right side in coal seam
Case is connected with gas gas cylinder by valve, and described fumer is connected with the air inlet of gas compressor by valve, described gas
The gas outlet of gas compressor is connected with described fumer by valve, and described fumer is provided with safety-valve, at each valve
It is equipped with electronic flowmeter and electronic manometer, is provided with gas drainage system simulation box in the front side in coal seam, in gas pumping system
It is provided with wire gauze between system simulation box and coal seam.
The technical scheme that thered is provided by above-mentioned this utility model is it can be seen that this coal seam watt of providing of this utility model embodiment
This extraction experimental simulation device, it is possible to achieve this coal bed gas extraction is simulated, and can simulate under coal mining difference ambient stress
Gas pumping situation under different gas pumping methods, the different parameter such as drillable length and sealing material, arrange for boring and
Gas pumping optimization provides foundation.
Accompanying drawing explanation
The main TV structure signal of this coal bed gas extraction experimental simulation device that Fig. 1 provides for this utility model embodiment
Figure.
The side-looking structural representation of this coal bed gas extraction experimental simulation device that Fig. 2 provides for this utility model embodiment
Figure.
The plan structure signal of this coal bed gas extraction experimental simulation device that Fig. 3 provides for this utility model embodiment
Figure.
Fig. 4 is the disk of adjustable orifice in this utility model embodiment.
Fig. 5 is gas pumping simulation box front view in this utility model embodiment.
Fig. 6 is gas pumping simulation box side view in this utility model embodiment.
In figure:
1-hydraulic prop support beam；2-hydraulic cylinder；3-experimental box body；4-gas drainage system simulation box；5-gas gas cylinder；
6-total gas pumping pipeline；7-expansion box；8-gas compressor；9-valve D；10-valve C；11-valve B；12-valve A；13-
Slide rail；14-valve F；15-valve E；16-fumer；The disk of 17-adjustable orifice；18-support；19-is connected with experimental box body
Steel plate；20-screw；21-gas pumping interface tube；22-investigates hole interface；23-handle；24-rubber ring.
Detailed description of the invention
This utility model embodiment will be described in further detail below.
Of the present utility model coal bed gas extraction experimental simulation device, its preferably detailed description of the invention is:
Including experimental box body, being provided with coal seam in described experimental box body, the upper and lower in described coal seam is respectively equipped with base plate
And top board, described seam roof is provided with multiple rows of hydraulic cylinder, and the top of every discharge opeing cylinder pressure is provided with hydraulic prop support beam, described coal
Four sides of layer are respectively equipped with the steel plate applying dead load, and described steel plate is fixed by steel strut, arrange in the left side in coal seam
Expansion box, arranges fumer on the right side in coal seam, and described expansion box is connected with gas gas cylinder by valve, and described fumer leads to
Crossing valve to be connected with the air inlet of gas compressor, the gas outlet of described gas compressor is by valve with described fumer even
Connecing, described fumer is provided with safety-valve, is equipped with electronic flowmeter and electronic manometer, at each valve before coal seam
Side is provided with gas drainage system simulation box, is provided with wire gauze between gas drainage system simulation box and coal seam.
Described gas drainage system simulation box includes casing, and the chamber door that described casing pulls before and after being provided with piston type is described
The upper end of chamber door and lower end have the screw fixing with casing, are provided with total extraction in described gas drainage system simulation box
Pipeline, the position that described gas drainage system simulation box contacts with described experimental box body is cased with rubber ring and is being formed around and side
The steel plate that face is vertical, steel plate is connected with described experimental box body by screw, and the inside of described gas drainage system simulation box is placed
Total gas pumping pipeline, one end of this pipe shuts, and the other end is end of bleeding, and is connected with negative pressure pump.
There are 7 gas pumping interface tubes the upper end of described total gas pumping pipeline, between each two gas pumping interface tube
It is provided with 1 and investigates hole interface, in each gas pumping interface tube, be equipped with the joint that the transmission line with data acquisition is connected, Mei Gejie
Mouth is provided with nut.
Also include that drilling and sealing system, described drilling and sealing system include that rig, drilling rod, described rig are placed in slide rail
On, described slide rail is provided with arrangement for adjusting height, and described drilling rod and coal seam are provided with a centre supported with support adjustable orifice
Disk.
Described top board and baseboard material are on-the-spot sandstone, with Gypsum Fibrosum as binding agent；Described coal seam uses multiple particle diameter
Coal dust is as main material, using coal tar as binding agent.
Of the present utility model coal bed gas extraction experimental simulation device, utilizes analog simulation theoretical, it is possible to achieve this coal
Layer gas pumping simulation, can simulate under coal mining difference ambient stress different gas pumping methods, different boring long
Gas pumping situation under the parameters such as degree and sealing material, arranges for boring and gas pumping optimization provides foundation.
Specific embodiment:
As shown in Figures 1 to 6, including coal-bearing series analog systems, gas injection system, gas drainage system, stress system
System and drilling and sealing system.Coal-bearing series analog systems mainly realizes the simulation of actual roof base plate.Gas injection system
Mainly can realize the gas bearing state in coal seam.Gas drainage system main analog gas pumping process and monitoring gas pumping
During various parameters.The stress in stress system main analog coal seam.Drilling and sealing system main analog gas pumping
Boring and sealing of hole process.
Described coal-bearing series analog systems includes coal seam, base plate, top board, a size of 4m × 3m × 2m, can carry out with real
Coal seam, the border likelihood ratio is the similarity simulation experiment of 1:5.
Described gas drainage system includes gas drainage system simulation box, extraction pipeline, gas compressor etc., to realize
The simulation of whole gas pumping.
Described coal seam vertical stress load is provided for 300mm hydraulic cylinder by 48 cylinder diameters, and the confined pressure for surrounding is then adopted
By the way of applying dead load, fix with steel plate and steel strut, but the coal seam part in the experimental apparatus left and right sides then uses
It is covered with the steel plate of mesh to apply dead load, and expansion box is set on the left of coal seam, fumer is set on right side, by toward storage
Gas tank gas injection and being ejected by the gas of fumer manufactures the pressure reduction on both sides, coal seam and realizes coal seam is carried out gas injection, and simulates coal
The front side of layer needs to place gas drainage system simulation box, needs to place iron wire between gas drainage system simulation box and coal seam
Net, to prevent from simulating coal seam avalanche in gas pumping case.
Described drilling and sealing system includes rig, drilling rod, slide rail etc., by rig is positioned on height-adjustable slide rail
On, simultaneously in order to prevent destructions such as causing that in boring procedure the model coal seam around hole is heaved, should first pacify before model coal seam
Put a centre supported with support and have the disk of adjustable orifice, and make it be close to model coal seam, before formal boring, regulation circle
Aperture in dish makes it be slightly larger than the drilling rod of electric drill, then regulates the height of slideway, makes drilling rod face the hole in the middle of disk
Drill.
Described is the rocks such as on-the-spot sandstone for top board baseboard material, and with Gypsum Fibrosum as binding agent, coal seam uses difference
The coal dust of particle diameter is as main material, using coal tar as binding agent.In mould in experimental apparatus make simulation coal seam and
Simulation roof and floor, the surrounding of mould is dismountable steel plate, after fixing mould surrounding, comes from top to bottom to make simulation coal successively
Layer base plate, simulates coal seam, and simulation roof.
Described coal seam, in order to reach the effect similar to run of mine coal seam porosity and permeability, first has to pass through different ratio
Manufacture cylinder molding coal sample and molding rock sample, measure its porosity and permeability, find suitable proportioning, and in experimental apparatus
Come from top to bottom to make seat earth, coal seam, and roof successively by the good surrounding of dismountable grinding tool Interal fixation.
Described gas injection system includes expansion box, fumer, gas compressor, gas gas cylinder, pipeline etc..Expansion box
It is connected with gas gas cylinder by valve, methane gas can be injected to simulation coal seam.Gas compressor passes through valve and fumer
It is connected, and the gas in fumer is re-introduced in expansion box by gas compressor, can realize in coal seam faster
The adsorption equilibrium of gas.Having safety-valve on fumer, it is connected with air by pipeline, is normally and closes dress state,
When in fumer, pressure is excessive, valve can automatically open up, and discharges gas, it is ensured that the safety of experiment.Fill at each valve
Electronic flowmeter and electronic manometer is had to carry out real-time monitored when can accomplish coal seam gas injection.
For simulating extraction tunnel in gas drainage system simulation box experimental apparatus, total extraction of placing mold draft experiment
The parameter measuring apparatus such as pipeline, gas pumping negative pressure flow.This simulation box uses the chamber door that piston type can front and back pull, chamber door
Upper end and lower end have the screw fixing with casing, prevent simulation experiment process chamber door be moved or eject.For
Reaching better seal effect, what another of gas drainage system simulation was surveyed is cased with rubber ring, and the oriented extension of its surrounding
Stretching 10 centimetres of steel plates vertical with side, each have screw above for being connected with whole experimental apparatus.The inside of simulation box is put
Putting total gas pumping pipeline, one end of this pipe is shut, and the other end is end of bleeding, and is connected with negative pressure pump.On total gas pumping pipeline
End has 7 gas pumping interface tubes, has 1 and investigate hole interface between each two gas pumping interface tube.Investigation hole is used to
The effective radius of gas pumping in measure analog experiment.The joint that the transmission line with data acquisition is connected it is equipped with in each interface,
The data acquisition unit being easy to be placed in bore inner is connected with computer, and has nut on each interface, to no interface
Seal.
Operation principle of the present utility model is:
After whole model is carried out, start on front side of model coal seam, arrange whole extraction and detecting system, first arrange
Coal bed drilling, first determines the spread pattern of boring before arranging boring, the spacing of wells, after these determine, further according to boring
Spread pattern and the spacing of wells, determine the position investigating hole between two borings, typically in order to effectively survey in actual production
The effective radius of fixed boring, can arrange one between two boring and investigate hole, but in an experiment in order to reach wanting of accuracy
Ask, can set up investigation hole by concrete condition.
Electricity consumption is drilled in coal seam punching, due to manual operation, has the biggest instability mode, is therefore positioned in advance by rig
On height-adjustable slide rail, in order to prevent destructions such as causing that in boring procedure the model coal seam around hole is heaved, Ying Xian
Dispose a centre supported with support to have the disk of adjustable orifice before model coal seam, and make it be close to model coal seam, formally
Before boring, the aperture in regulation disk makes it be slightly larger than the drilling rod of electric drill, then regulates the height of slideway, makes drilling rod face circle
Hole in the middle of dish is drilled.
After the boring in coal seam arranges, it will arrange corresponding monitoring instrument in the borehole, it is first determined simulation is real
Test the sealed borehole length of middle boring, in boring, except the region of sealing material to be injected, arrange an electronic flowmeter, gas
Monitoring is popped one's head in and arranges an electronic pressare-measuring instrument every 200mm, and is taken out through gas by the transmission line of these data acquisition units
Adopt the jointing managed in interface tube total with gas pumping to be connected.
After installing data acquisition unit, boring is carried out sealing of hole, during sealing of hole, use both sides to block up, the technique of middle slip casting,
The most on-the-spot a lot of with sealing material, the quality of various sealing material can be measured according to this experiment, sealed borehole length is according to phase
Determine like ratio.
Start coal seam is inflated after whole extraction system arranges, and judge whole by the pressure of pressure tap
Coal seam whether adsorption equilibrium, after balance, starts the simulation of whole gas pumping.
Experiment opens total air bleeding valve after terminating, and the methane gas all experiments used is discharged.
The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not
Being confined to this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in
Change or replacement, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is as the criterion with the protection domain of claims.
Claims (4)
1. this coal bed gas extraction experimental simulation device, it is characterised in that include experimental box body, set in described experimental box body
Having coal seam, the upper and lower in described coal seam to be respectively equipped with base plate and top board, described seam roof is provided with multiple rows of hydraulic cylinder, often
The top of discharge opeing cylinder pressure is provided with hydraulic prop support beam, and four sides in described coal seam are respectively equipped with the steel plate applying dead load,
Described steel plate is fixed by steel strut, arranges expansion box in the left side in coal seam, arranges fumer, described gas storage on the right side in coal seam
Case is connected with gas gas cylinder by valve, and described fumer is connected with the air inlet of gas compressor by valve, described gas
The gas outlet of gas compressor is connected with described fumer by valve, and described fumer is provided with safety-valve, at each valve
It is equipped with electronic flowmeter and electronic manometer, is provided with gas drainage system simulation box in the front side in coal seam, in gas pumping system
It is provided with wire gauze between system simulation box and coal seam.
The most according to claim 1 coal bed gas extraction experimental simulation device, it is characterised in that described gas pumping system
System simulation box includes casing, the chamber door that described casing pulls before and after being provided with piston type, the upper end of described chamber door and end, bottom
End has the screw fixing with casing, is provided with total extraction pipeline, described gas drainage system in described gas drainage system simulation box
The position that simulation box contacts with described experimental box body is cased with rubber ring and is being formed around the steel plate vertical with side, and steel plate passes through
Screw is connected with described experimental box body, and total gas pumping pipeline, this pipeline are placed in the inside of described gas drainage system simulation box
One end shut, the other end is end of bleeding, and is connected with negative pressure pump；
There are 7 gas pumping interface tubes the upper end of described total gas pumping pipeline, is provided with 1 between each two gas pumping interface tube
Individual investigation hole interface, is equipped with the joint that the transmission line with data acquisition is connected, on each interface in each gas pumping interface tube
It is provided with nut.
The most according to claim 1 and 2 coal bed gas extraction experimental simulation device, it is characterised in that also include boring
Sealing of hole system, described drilling and sealing system includes that rig, drilling rod, described rig are placed on slide rail, and described slide rail is provided with height
Adjusting means, described drilling rod and coal seam are provided with a centre supported with support the disk of adjustable orifice.
The most according to claim 1 and 2 coal bed gas extraction experimental simulation device, it is characterised in that described top board and
Baseboard material is on-the-spot sandstone, with Gypsum Fibrosum as binding agent；Described coal seam use the coal dust of multiple particle diameter as main material, with
Coal tar is as binding agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620727685.4U CN205786605U (en) | 2016-07-11 | 2016-07-11 | A kind of this coal bed gas extraction experimental simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620727685.4U CN205786605U (en) | 2016-07-11 | 2016-07-11 | A kind of this coal bed gas extraction experimental simulation device |
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| Publication Number | Publication Date |
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| CN205786605U true CN205786605U (en) | 2016-12-07 |
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| CN201620727685.4U Withdrawn - After Issue CN205786605U (en) | 2016-07-11 | 2016-07-11 | A kind of this coal bed gas extraction experimental simulation device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974084A (en) * | 2016-07-11 | 2016-09-28 | 中国矿业大学(北京) | In-coal-seam gas extraction experiment simulation device |
| CN106840727A (en) * | 2017-02-21 | 2017-06-13 | 山东科技大学 | Seam Mining stress field seepage field temperature field coupling test system and method |
| CN107607366A (en) * | 2017-10-09 | 2018-01-19 | 中国石油天然气集团公司 | A kind of methane collection device, coal seam gas production well discharge of methane measure apparatus and method |
| CN107942030A (en) * | 2017-12-18 | 2018-04-20 | 河南理工大学 | A kind of biaxial loadings gas pumping gas leakage analogue experiment installation and method |
| CN109322695A (en) * | 2018-12-05 | 2019-02-12 | 安徽建筑大学 | Coal face gas treatment device |
| CN112362319A (en) * | 2020-09-28 | 2021-02-12 | 中煤科工开采研究院有限公司 | Negative pressure support effect test device and test method |
-
2016
- 2016-07-11 CN CN201620727685.4U patent/CN205786605U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974084A (en) * | 2016-07-11 | 2016-09-28 | 中国矿业大学(北京) | In-coal-seam gas extraction experiment simulation device |
| CN106840727A (en) * | 2017-02-21 | 2017-06-13 | 山东科技大学 | Seam Mining stress field seepage field temperature field coupling test system and method |
| CN107607366A (en) * | 2017-10-09 | 2018-01-19 | 中国石油天然气集团公司 | A kind of methane collection device, coal seam gas production well discharge of methane measure apparatus and method |
| CN107607366B (en) * | 2017-10-09 | 2019-10-11 | 中国石油天然气集团公司 | A kind of methane collection device, coal seam gas production well discharge of methane measurement device and method |
| CN107942030A (en) * | 2017-12-18 | 2018-04-20 | 河南理工大学 | A kind of biaxial loadings gas pumping gas leakage analogue experiment installation and method |
| CN107942030B (en) * | 2017-12-18 | 2024-06-04 | 河南理工大学 | Bidirectional loading gas extraction leakage simulation experiment device and method |
| CN109322695A (en) * | 2018-12-05 | 2019-02-12 | 安徽建筑大学 | Coal face gas treatment device |
| CN109322695B (en) * | 2018-12-05 | 2024-02-06 | 淮南矿业(集团)有限责任公司 | Coal face gas treatment device |
| CN112362319A (en) * | 2020-09-28 | 2021-02-12 | 中煤科工开采研究院有限公司 | Negative pressure support effect test device and test method |
| CN112362319B (en) * | 2020-09-28 | 2022-12-16 | 中煤科工开采研究院有限公司 | Negative pressure support effect test device and test method |
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