CN107655809A - A kind of coal containing methane gas seepage flow test device for considering Crack change - Google Patents
A kind of coal containing methane gas seepage flow test device for considering Crack change Download PDFInfo
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- CN107655809A CN107655809A CN201710881799.3A CN201710881799A CN107655809A CN 107655809 A CN107655809 A CN 107655809A CN 201710881799 A CN201710881799 A CN 201710881799A CN 107655809 A CN107655809 A CN 107655809A
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- crack
- test piece
- demarcation strip
- piece box
- containing methane
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- 238000012360 testing method Methods 0.000 title claims abstract description 106
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000003245 coal Substances 0.000 title claims abstract description 44
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 20
- 241000169624 Casearia sylvestris Species 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Dispersion Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of coal containing methane gas seepage flow test device for considering Crack change, the test specimen loads and test specimen coal is filled with seal cavity, and the other end of the test specimen loading seal cavity, which is connected by pipeline with gas pot above the both ends of the crack plane, is respectively equipped with the pressure sensor and flow sensor being fixed in the test piece box side wall of crack.The present invention can either be loaded with the adjustability in test specimen crack in the slit device realization experiment of different crack open width test specimens, facilitate coal containing methane gas seepage flow from crack, also the seepage characteristic variation tendency of the coal containing methane gas seepage flow under the conditions of different pressures can accurately be obtained, it is easy to the seepage characteristic for more really reflecting Crack change, precise and stable pressure value and flow value can be obtained, improve the precision of experiment, accuracy, the authenticity of measurement fracture seepage experiment are ensure that, the efficiency of experiment is greatly improved, saves the cost of experiment.
Description
Technical field
The present invention relates to seepage flow test device technical field, specially a kind of coal containing methane gas seepage flow examination for considering Crack change
Experiment device.
Background technology
For the Gas-bearing Coal Seams in crack be present, when gas in crack be present, the pressure of gas can cause coal seam
Gradual unstable failure, on a macroscopic scale, the presence and change of seepage field are to cause crack Gas-bearing Coal Seams unstability, are even resulted in
One of major reason of extensive coal mining accident, therefore influence of the crack to coal containing methane gas is studied just it should be understood that crack coal seam
Penetration Signature, it is most of at present have fissare Gas-bearing Coal Seams Penetration Signature research be all by certain theorem, and this
The applicable elements of kind of theorem are that crack upper and lower surface is substantially parallel and roughness very little, and folder is utilized during the experiments of majority research
Tool clamps test specimen, changes the open width in crack by changing the spacing in crack gap, this process causes to contain gas unavoidably
The seepage flow of gas in coal seam, and pressure can not regulate and control, it is impossible to the coal containing methane gas seepage flow of real simulation natural fissure change
Process.For this reason, it is necessary to provide a kind of coal containing methane gas seepage flow test device for considering Crack change.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide a kind of coal containing methane gas seepage flow test device for considering Crack change
The problem of being proposed in background technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of coal containing methane gas seepage flow test device for considering Crack change, including crack test piece box, the crack test piece box
Bottom surface in the middle part of be provided with inlet port, the inlet port is provided with the test specimen loading seal cavity by pipeline connection, the test specimen
Load and test specimen coal is filled with seal cavity, the test specimen, which loads the passage that seal cavity is connected with crack test piece box and is provided with, to be led to
Channel attached vavuum pump is crossed, the other end that the test specimen loads seal cavity is connected by pipeline with gas pot, the gas
The pipeline that tank and test specimen are loaded between seal cavity is provided with booster pump, and the pipeline between the booster pump and gas pot is provided with
Intake valve, the gas pot are connected by pipeline with the gas outlet of crack test piece box top surface, and crack test piece box and gas pot it
Between pipeline be provided with air outlet valve, the middle part in the crack test piece box is provided with demarcation strip, and the demarcation strip includes big demarcation strip
With small demarcation strip, the big demarcation strip on the opposite face of small demarcation strip with being equipped with the crack plane being used in combination, and small point
Bulkhead seal is fixed in the test piece box of crack, is respectively equipped with above the both ends of the crack plane and is fixed on crack test piece box side wall
On pressure sensor and flow sensor, be provided with the middle part of the crack test piece box and the big side wall of demarcation strip identical one and fix
Frame, the middle part of the fixed mount are provided with screwed hole, and one end of the remote small demarcation strip of the big demarcation strip extends to crack test specimen
Case is outer and is connected by one end of bearing and threaded rod, and the other end of the threaded rod through screwed hole and is provided with handwheel disk.
Preferably, the both ends of the big demarcation strip are connected by chute with the both ends side wall of crack test piece box, and crack
The top surface of test piece box is clear glass, and elastic rubber layer is provided with the chute.
Preferably, the pressure sensor and flow sensor are connected by wire with intelligent terminal.
Preferably, corresponding graduation mark is equipped with the both ends side wall of the crack test piece box, and graduation mark is positioned at cunning
The surface of groove.
Preferably, sealant is provided between the big demarcation strip and crack test piece box, and the geomery of big demarcation strip is big
In the geomery of small demarcation strip.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention before use, first that whole experimental rig is good,
Again by vacuum pump operation, it will first be taken out in whole experimental rig and, avoid some extraneous factors and have influence on test data
Result, and loaded in test specimen in seal cavity and be filled with test specimen coal, and be provided with demarcation strip in crack test piece box, pass through handwheel disk
Drive big demarcation strip to move, and work as and the timing of crack plane clearance one is left between big demarcation strip and small demarcation strip, opening and gas
Tank connected intake valve, and entered in test specimen loading seal cavity by the setting of booster pump and gas and connect with test specimen coal
Touching, consequently facilitating coal containing methane gas seepage tests can smoothly be carried out so that coal containing methane gas is entered in the test piece box of crack, due to
Carry out processing storage by the way that obtained data are transferred into intelligent terminal provided with pressure sensor and flow sensor, and close into
Coal containing methane gas in the test piece box of crack is recycled in gas pot by air valve by air outlet valve simultaneously, it is possible to achieve the self-loopa of gas
Effect, while the security of experiment is also improved, and adjusted again between big demarcation strip and small demarcation strip by graduation mark
Spacing, the like, the data re-transmission obtained by pressure sensor and flow sensor is subjected to processing storage to intelligent terminal
Deposit, can be by the change in crack, it is achieved thereby that the experimental provision of coal containing methane gas seepage flow.The present invention can either be loaded with difference
The slit device of crack open width test specimen realizes the adjustability in test specimen crack in experiment, facilitates coal containing methane gas to be oozed from crack
Stream, also can accurately obtain the seepage characteristic variation tendency of the coal containing methane gas seepage flow under the conditions of different pressures, be easy to truer
The seepage characteristic for reflecting Crack change, precise and stable pressure value and flow value can be obtained, improve the precision of experiment, ensure
Accuracy, the authenticity of measurement fracture seepage experiment, the efficiency of experiment is greatly improved, saves the cost of experiment.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is test piece box structure top view in crack of the present invention.
In figure：1 crack test piece box, 2 inlet ports, 3 test specimens load seal cavity, 4 test specimen coals, 5 vavuum pumps, 6 gas pots, 7
Booster pump, 8 intake valves, 9 gas outlets, 10 air outlet valves, 11 demarcation strips, 12 big demarcation strips, 13 small demarcation strips, 14 crack planes, 15
Pressure sensor, 16 flow sensors, 17 fixed mounts, 18 screwed holes, 19 threaded rods, 20 handwheel disks, 21 chutes, 22 elastic caoutchoucs
Layer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1-2 is referred to, the present invention provides a kind of technical scheme：
A kind of coal containing methane gas seepage flow test device for considering Crack change, including crack test piece box 1, crack test piece box 1
Inlet port 2 is provided with the middle part of bottom surface, inlet port 2 is provided with the test specimen connected by pipeline and loads seal cavity 3, and test specimen loads sealing
Test specimen coal 4 is filled with cavity 3, is easy to test it, test specimen loading seal cavity 3 is connected logical with crack test piece box 1
Road, which is provided with, passes through channel attached vavuum pump 5, avoids because some factors cause the result of experiment, test specimen loads annular seal space
The other end of body 3 is connected by pipeline with gas pot 6, and the pipeline that gas pot 6 and test specimen are loaded between seal cavity 3, which is provided with, to be increased
Press pump 7, using the teaching of the invention it is possible to provide different pressures are tested, and the pipeline between booster pump 7 and gas pot 6 is provided with intake valve 8, gas pot
6 are connected by pipeline with the gas outlet 9 of the top surface of crack test piece box 1, and are set on the pipeline between crack test piece box 1 and gas pot 6
There is air outlet valve 10, be easy to recycle, the middle part in crack test piece box 1 is provided with demarcation strip 11, and demarcation strip 11 includes big demarcation strip
12 and small demarcation strip 13, big demarcation strip 12 with being equipped with the crack plane 14 being used in combination on the opposite face of small demarcation strip 13,
And the small sealing of demarcation strip 13 is fixed in crack test piece box 1, is respectively equipped with above the both ends of crack plane 14 and is fixed on crack examination
Pressure sensor 15 and flow sensor 16 in the side wall of part case 1, pressure sensor 15 and flow sensor 16 pass through wire
It is connected with intelligent terminal, is easy to resulting data message being acquired storage, the both ends of big demarcation strip 12 pass through chute
21 are connected with the both ends side wall of crack test piece box 1, and the top surface of crack test piece box 1 is clear glass, and elasticity is provided with chute 21
Rubber layer 22, is equipped with corresponding graduation mark in the both ends side wall of crack test piece box 1, and graduation mark be located at chute 21 just on
Side, it is easy to the size quickly required for regulation, sealant is provided between big demarcation strip 12 and crack test piece box 1, is improved close
Feng Xing, and the geomery of big demarcation strip 12 is more than the geomery of small demarcation strip 13, crack test piece box 1 and the big phase of demarcation strip 12
Fixed mount 17 is provided with the middle part of a same side wall, the middle part of fixed mount 17 is provided with screwed hole 18, the remote small separation of big demarcation strip 12
One end of plate 13 extends to outside crack test piece box 1 and is connected by bearing with one end of threaded rod 19, is easy to adjust the seam in crack
Gap, the other end of threaded rod 19 through screwed hole 18 and are provided with handwheel disk 20, are conveniently adjusted.
The present invention is run before use, first that whole experimental rig is good, then by vavuum pump 5, by whole experimental rig
First take out and, avoid the result that some extraneous factors have influence on test data, and load in seal cavity 3 and fill in test specimen
There is test specimen coal 4, and demarcation strip 11 is provided with crack test piece box 1, drive big demarcation strip 12 to move by handwheel disk 20, and ought divide greatly
The timing of 14 gap of crack plane one is left between dividing plate 12 and small demarcation strip 13, opens the intake valve being connected with gas pot 6, and lead to
Cross the setting of booster pump 7 and gas enters test specimen and loads in seal cavity 3 and contacted with test specimen coal 4, consequently facilitating containing gas
Coal seepage tests can smoothly be carried out so that coal containing methane gas is entered in crack test piece box 1, due to by provided with pressure sensing
Obtained data are transferred to intelligent terminal and carry out processing storage by device 15 and flow sensor 16, and are closed intake valve 8 while led to
Cross air outlet valve 10 coal containing methane gas in crack test piece box 1 is recycled in gas pot 6, it is possible to achieve the self-loopa effect of gas,
The security of experiment is also improved simultaneously, and between being adjusted again between big demarcation strip 12 and small demarcation strip 13 by graduation mark
Away from, the like, the data re-transmission obtained by pressure sensor 15 and flow sensor 16 is handled to intelligent terminal
Storage, can be by the change in crack, it is achieved thereby that the experimental provision of coal containing methane gas seepage flow.The present invention can either be loaded with not
Slit device with crack open width test specimen realizes the adjustability in test specimen crack in experiment, facilitates coal containing methane gas to be oozed from crack
Stream, also can accurately obtain the seepage characteristic variation tendency of the coal containing methane gas seepage flow under the conditions of different pressures, be easy to truer
The seepage characteristic for reflecting Crack change, precise and stable pressure value and flow value can be obtained, improve the precision of experiment, ensure
Accuracy, the authenticity of measurement fracture seepage experiment, the efficiency of experiment is greatly improved, saves the cost of experiment.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of coal containing methane gas seepage flow test device for considering Crack change, including crack test piece box (1), it is characterised in that：Institute
State and inlet port (2) is provided with the middle part of the bottom surface of crack test piece box (1), the inlet port (2) is provided with the test specimen connected by pipeline
Seal cavity (3) is loaded, the test specimen loads and test specimen coal (4) is filled with seal cavity (3), and the test specimen loads seal cavity
(3) passage being connected with crack test piece box (1), which is provided with, passes through channel attached vavuum pump (5), and the test specimen loads annular seal space
The other end of body (3) is connected by pipeline with gas pot (6), between the gas pot (6) and test specimen loading seal cavity (3)
Pipeline is provided with booster pump (7), and the pipeline between the booster pump (7) and gas pot (6) is provided with intake valve (8), described watt
This tank (6) is connected by pipeline with the gas outlet (9) of crack test piece box (1) top surface, and crack test piece box (1) and gas pot (6)
Between pipeline be provided with air outlet valve (10), the middle part in the crack test piece box (1) is provided with demarcation strip (11), the demarcation strip
(11) include big demarcation strip (12) and small demarcation strip (13), the big demarcation strip (12) with the opposite face of small demarcation strip (13)
Provided with the crack plane (14) being used in combination, and small demarcation strip (13) sealing is fixed in crack test piece box (1), the crack
The pressure sensor (15) and flow sensing being fixed in crack test piece box (1) side wall are respectively equipped with above the both ends of plane (14)
Device (16), the crack test piece box (1) in the middle part of the side wall of big demarcation strip (12) identical one with being provided with fixed mount (17), the fixation
The middle part of frame (17) is provided with screwed hole (18), and one end of the remote small demarcation strip (13) of the big demarcation strip (12) extends to crack
Test piece box (1) is connected outside and by bearing with one end of threaded rod (19), and the other end of the threaded rod (19) passes through screwed hole
(18) and it is provided with handwheel disk (20).
A kind of 2. coal containing methane gas seepage flow test device for considering Crack change according to claim 1, it is characterised in that：Institute
The both ends for stating big demarcation strip (12) are connected by chute (21) with the both ends side wall of crack test piece box (1), and crack test piece box
(1) top surface is clear glass, and elastic rubber layer (22) is provided with the chute (21).
A kind of 3. coal containing methane gas seepage flow test device for considering Crack change according to claim 1, it is characterised in that：Institute
State pressure sensor (15) and flow sensor (16) is connected by wire with intelligent terminal.
4. a kind of coal containing methane gas seepage flow test device for considering Crack change according to claim 1 or 2, its feature exist
In：Corresponding graduation mark is equipped with the both ends side wall of the crack test piece box (1), and graduation mark is being located at chute (21) just
Top.
A kind of 5. coal containing methane gas seepage flow test device for considering Crack change according to claim 1, it is characterised in that：Institute
State and sealant is provided between big demarcation strip (12) and crack test piece box (1), and the geomery of big demarcation strip (12) is more than small point
The geomery of dividing plate (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710881799.3A CN107655809A (en) | 2017-09-26 | 2017-09-26 | A kind of coal containing methane gas seepage flow test device for considering Crack change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710881799.3A CN107655809A (en) | 2017-09-26 | 2017-09-26 | A kind of coal containing methane gas seepage flow test device for considering Crack change |
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| Publication Number | Publication Date |
|---|---|
| CN107655809A true CN107655809A (en) | 2018-02-02 |
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ID=61131161
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710881799.3A Pending CN107655809A (en) | 2017-09-26 | 2017-09-26 | A kind of coal containing methane gas seepage flow test device for considering Crack change |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279097A (en) * | 2018-03-09 | 2018-07-13 | 西南交通大学 | A kind of cross duct pieces of shield tunnel seam waterproof experimental rig |
| CN108562402A (en) * | 2018-03-07 | 2018-09-21 | 西南交通大学 | A kind of duct pieces of shield tunnel seam multi layer waterproof experimental rig |
| CN111157422A (en) * | 2019-12-30 | 2020-05-15 | 中国地质大学（武汉） | Device capable of quantitatively adjusting rock rough fracture opening and using method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206420736U (en) * | 2016-12-07 | 2017-08-18 | 邹静 | A kind of coal containing methane gas seepage flow test device for considering Crack change |
-
2017
- 2017-09-26 CN CN201710881799.3A patent/CN107655809A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206420736U (en) * | 2016-12-07 | 2017-08-18 | 邹静 | A kind of coal containing methane gas seepage flow test device for considering Crack change |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562402A (en) * | 2018-03-07 | 2018-09-21 | 西南交通大学 | A kind of duct pieces of shield tunnel seam multi layer waterproof experimental rig |
| CN108279097A (en) * | 2018-03-09 | 2018-07-13 | 西南交通大学 | A kind of cross duct pieces of shield tunnel seam waterproof experimental rig |
| CN111157422A (en) * | 2019-12-30 | 2020-05-15 | 中国地质大学（武汉） | Device capable of quantitatively adjusting rock rough fracture opening and using method thereof |
| CN111157422B (en) * | 2019-12-30 | 2021-03-30 | 中国地质大学（武汉） | Device capable of quantitatively adjusting rock rough fracture opening and using method thereof |
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Application publication date: 20180202 |