CN106353478A - Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state - Google Patents
Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state Download PDFInfo
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- CN106353478A CN106353478A CN201610887880.8A CN201610887880A CN106353478A CN 106353478 A CN106353478 A CN 106353478A CN 201610887880 A CN201610887880 A CN 201610887880A CN 106353478 A CN106353478 A CN 106353478A
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- 239000003245 coal Substances 0.000 title claims abstract description 114
- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000002474 experimental method Methods 0.000 claims abstract description 14
- 238000012546 transfer Methods 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 9
- 238000004880 explosion Methods 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 4
- 238000005086 pumping Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
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- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device and method for real-time dynamic testing on gas seepage and coal damage deformation in a negative pressure state. The device comprises a gas seepage experiment system, a stress loading experiment system, a coal damage real-time observation system, a negative pressure control system and a coal deformation testing system, wherein the gas seepage experiment system comprises a gas cylinder and a coal sample tank, the gas cylinder and the negative pressure control system are connected with the coal sample tank respectively through a gas delivery pipe, and a flow meter is arranged on the gas delivery pipe through which the negative pressure control system is connected with the coal sample tank; and the stress loading experiment system comprises an axial pressure loading device and a confining pressure loading system, the axial pressure loading device comprises a pressing machine, the confining pressure loading system comprises a confining pressure pump, and a confining pressure control instrument is arranged on the confining pressure pump. By researching real-time change of gas seepage and coal damage under negative pressure conditions, the gas extraction is optimized, so that the gas extraction is more similar to actual gas extraction, and a theoretical basis is provided for establishing gas extraction and optimization measures.
Description
Technical field
The present invention relates to a kind of gas pumping technology, under more particularly, to a kind of negative pressure state, gas porous flow is damaged with coal body and becomes
Shape Real-time and Dynamic test device and method.
Background technology
One of maximally effective Achievements of Gas Control means are exactly gas pumping at present, and gas pumping important feature
It is exactly negative pressure.Therefore, in order to be more nearly actual gas pumping situation, under research condition of negative pressure, gas porous flow and coal body damage
Real-time change is of great significance to gas pumping optimization tool.
At present, under related negative pressure state, gas porous flow damages deformation Real-time and Dynamic test device with coal body and method is difficult to
Close to actual gas pumping situation it is impossible to provide theoretical foundation for the formulation of gas pumping Optimized Measures.
Content of the invention
It is an object of the invention to provide under a kind of negative pressure state being more nearly actual gas pumping situation gas porous flow with
Coal body damages deformation Real-time and Dynamic test device and method.
The purpose of the present invention is achieved through the following technical solutions:
Under the negative pressure state of the present invention, gas porous flow and coal body damage deformation Real-time and Dynamic test device, including gas porous flow
Experimental system, stress loading experimental system, coal damage real-time monitored system, vacuum control system, coal deformation test system；
Described gas porous flow experimental system includes gas gas cylinder, coal sample tank, described gas gas cylinder and vacuum control system
It is connected with described coal sample tank by gas transfer pipeline respectively, described vacuum control system and coal sample tank connected gas delivery pipe
Road is provided with effusion meter；
Described stress loading experimental system includes axial compression charger and confined pressure loading system, described axial compression charger
Including forcing press, described confined pressure loading system includes confined pressure pump, and described confined pressure pump is provided with confined pressure control instrument.
Under the above-mentioned negative pressure state of the present invention, gas porous flow and coal body damage deformation Real-time and Dynamic test device and realize bearing
The method that under pressure condition, gas porous flow and coal body damage deformation Real-time and Dynamic test, including step:
Make coal sample first, post foil gauge and wire, then assemble instrument, coal body damage real-time monitored system is inserted
Coal sample pot bottom, and coal sample is placed on the top of this system, after assembling coal sample tank, by coal sample tank and gas gas cylinder, effusion meter
Connect with vacuum control system, coal deformation test system, then coal sample tank is placed in stress loading system, and setting shaft
Pressure, confined pressure numerical value and the inlet pressure value of coal sample pipe and the negative pressure value of the port of export；
After the good above Preparatory work of experiment of group, proceed by gas porous flow under condition of negative pressure real with coal body damage deformation real-time testing
Test；
After the completion of experiment, the coal body taking out in coal sample tank damages real-time monitored system, by the data of wherein miniature video camera
Import to computer to be analyzed.
As seen from the above technical solution provided by the invention, under negative pressure state provided in an embodiment of the present invention, gas oozes
Stream damages deformation Real-time and Dynamic test device and method with coal body, is more nearly actual gas pumping situation, studies condition of negative pressure
The real-time change of lower gas porous flow and coal body damage provides theory to gas pumping optimization, the formulation for gas pumping Optimized Measures
Foundation.
Brief description
Fig. 1 is that under negative pressure state provided in an embodiment of the present invention, gas porous flow and coal body damage deformation Real-time and Dynamic test dress
The structural representation put；
Fig. 2 is that under negative pressure state in the embodiment of the present invention, gas porous flow and coal body damage Real-time and Dynamic test device section show
It is intended to；
Fig. 3 a, Fig. 3 b are respectively the pressure circle that coal body in the embodiment of the present invention damages real-time monitored system and its Intermediate Gray eye
The structural representation of cylindricality glass；
Fig. 4 is the cross-sectional view that in the embodiment of the present invention, coal body damages real-time monitored system.
In figure:
1- gas gas cylinder；2- gas transfer pipeline；3- deformeter；4- digital data recording system；5- forcing press；6- coal sample tank；
7- confined pressure control instrument；8- confined pressure pump；9- effusion meter；10- vacuum control system；6- coal sample tank；11- coal sample canister incoming gas mouth；12-
Piston rod；13- top fixing nut；14- coal sample；15- rubber sleeve；16- attemperator；17- confined pressure oil transportation hole；18- is miniature to be taken the photograph
Camera；19- coal damages real-time monitored system；The miniature major light of 20-；21- bottom fixing nut；22- support bar；23- coal sample tank
Gas outlet；24- microcam；25- gas delivery pipe；26- major light；27- protects cylinder body；The pressure circle of 28- Intermediate Gray eye
Cylindricality glass.
Specific embodiment
The embodiment of the present invention will be described in further detail below.
Under the negative pressure state of the present invention, gas porous flow and coal body damage deformation Real-time and Dynamic test device, and it is preferably concrete
Embodiment is:
Damage real-time monitored system, vacuum cavitations system including gas porous flow experimental system, stress loading experimental system, coal
System, coal deformation test system；
Described gas porous flow experimental system includes gas gas cylinder, coal sample tank, described gas gas cylinder and vacuum control system
It is connected with described coal sample tank by gas transfer pipeline respectively, described vacuum control system and coal sample tank connected gas delivery pipe
Road is provided with effusion meter；
Described stress loading experimental system includes axial compression charger and confined pressure loading system, described axial compression charger
Including forcing press, described confined pressure loading system includes confined pressure pump, and described confined pressure pump is provided with confined pressure control instrument.
Described coal body damages real-time monitored system and includes protecting cylinder body, microcam and miniature major light, described protection
The top cap of cylinder body is made up of the pressure cylindrical glass of Intermediate Gray eye, and other parts are formed from steel, described protection cylinder body
Centre have a gas delivery pipe, described microcam and miniature major light to be placed in described protection cylinder interior.
Described vacuum control system includes anti-explosion vacuum pump, electron vacuum gage, electromagnetic relay and single-chip microcomputer, described electronics
Vacuometer is connected with anti-explosion vacuum pump by gas transfer pipeline, and the data wire of described electron vacuum gage is continued with single-chip microcomputer and electromagnetism
Electrical equipment is connected, and described electromagnetic relay is connected with the switch of described anti-explosion vacuum pump.
Described coal deformation test system includes foil gauge, the deformeter data record system connecting by wire, institute
State foil gauge at the upper pressure head of coal sample tank.
Under the above-mentioned negative pressure state of the present invention, gas porous flow and coal body damage deformation Real-time and Dynamic test device and realize bearing
The method that under pressure condition, gas porous flow and coal body damage deformation Real-time and Dynamic test, its preferably specific embodiment is:
Including step:
Make coal sample first, post foil gauge and wire, then assemble instrument, coal body damage real-time monitored system is inserted
Coal sample pot bottom, and coal sample is placed on the top of this system, after assembling coal sample tank, by coal sample tank and gas gas cylinder, effusion meter
Connect with vacuum control system, coal deformation test system, then coal sample tank is placed in stress loading system, and setting shaft
Pressure, confined pressure numerical value and the inlet pressure value of coal sample pipe and the negative pressure value of the port of export；
After the good above Preparatory work of experiment of group, proceed by gas porous flow under condition of negative pressure real with coal body damage deformation real-time testing
Test；
After the completion of experiment, the coal body taking out in coal sample tank damages real-time monitored system, by the data of wherein miniature video camera
Import to computer to be analyzed.
Specific embodiment:
As shown in Figures 1 to 4, under negative pressure state, gas porous flow and coal body damage deformation Real-time and Dynamic test device and method
Including gas porous flow experimental system, stress loading experimental system, coal damages real-time monitored system, vacuum control system.
Described gas porous flow experimental system includes gas gas cylinder, gas transfer pipeline, coal sample tank and effusion meter composition.Watt
This transfer pipeline and gas gas cylinder, coal sample tank, effusion meter is connected with negative pressure control apparatus.
Described stress loading experimental system is made up of axial compression charger and confined pressure loading system.Axial compression loads by pressure
Realizing, confined pressure is loaded and is realized by force (forcing) pump power machine.
Described coal body damages real-time monitored system by protecting cylinder body, microcam, miniature major light composition, protects cylinder body
Top cap be made up of the pressure cylindrical glass of Intermediate Gray eye, other parts are formed from steel, and protect the centre of cylinder body
There is a gas delivery pipe.Microcam and miniature major light are placed in protection cylinder interior.
Described vacuum control system is by anti-explosion vacuum pump, electron vacuum gage, electromagnetic relay and single-chip microcomputer composition.Wherein electricity
Sub- vacuometer is connected with anti-explosion vacuum pump by gas transfer pipeline, the data wire of electron vacuum gage and single-chip microcomputer and electromagnetism relay
Device is connected.Single-chip microcomputer controls the switch of anti-explosion vacuum pump by the Data Control electromagnetic relay switch of electron vacuum gage, from
And reach the purpose controlling and maintaining port of export negative pressure value.
Described coal deformation test system is made up of foil gauge, wire, deformeter, digital data recording system.Wherein wire leads to
Cross special joint to draw in coal sample tank pressure rostral wall, joint is connected with coal sample tank pressure head by screw thread.
Make coal sample first, post foil gauge and wire, then assemble instrument, coal body damage real-time monitored system is inserted
Coal sample pot bottom, and coal sample is placed on the top of this system, after assembling coal sample tank, by coal sample tank and gas gas cylinder, effusion meter
Connect with vacuum control system, coal deformation test system.Then coal sample tank is placed in stress loading system.Secondly setting shaft
Pressure, confined pressure numerical value and the inlet pressure value of coal sample pipe and the negative pressure value of the port of export.
After the good above Preparatory work of experiment of group, proceed by gas porous flow under condition of negative pressure real with coal body damage deformation real-time testing
Test.After the completion of experiment, the coal body taking out in coal sample tank damages real-time monitored system, and the data of wherein miniature video camera is imported to
Computer is analyzed.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change or replacement that can readily occur in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (5)
1. under a kind of negative pressure state, gas porous flow and coal body damage deformation Real-time and Dynamic test device it is characterised in that including watt
This seepage flow experiment system, stress loading experimental system, coal damage real-time monitored system, vacuum control system, coal deformation test
System；
Described gas porous flow experimental system includes gas gas cylinder, coal sample tank, and described gas gas cylinder and vacuum control system are respectively
It is connected with described coal sample tank by gas transfer pipeline, on described vacuum control system and coal sample tank connected gas transfer pipeline
It is provided with effusion meter；
Described stress loading experimental system includes axial compression charger and confined pressure loading system, and described axial compression charger includes
Forcing press, described confined pressure loading system includes confined pressure pump, and described confined pressure pump is provided with confined pressure control instrument.
2. under negative pressure state according to claim 1, gas porous flow and coal body damage deformation Real-time and Dynamic test device, its
It is characterised by, described coal body damages real-time monitored system and includes protecting cylinder body, microcam and miniature major light, described protection
The top cap of cylinder body is made up of the pressure cylindrical glass of Intermediate Gray eye, and other parts are formed from steel, described protection cylinder body
Centre have a gas delivery pipe, described microcam and miniature major light to be placed in described protection cylinder interior.
3. under negative pressure state according to claim 2, gas porous flow and coal body damage deformation Real-time and Dynamic test device, its
It is characterised by, described vacuum control system includes anti-explosion vacuum pump, electron vacuum gage, electromagnetic relay and single-chip microcomputer, described electricity
Sub- vacuometer is connected with anti-explosion vacuum pump by gas transfer pipeline, the data wire of described electron vacuum gage and single-chip microcomputer and electromagnetism
Relay is connected, and described electromagnetic relay is connected with the switch of described anti-explosion vacuum pump.
4. under negative pressure state according to claim 3, gas porous flow and coal body damage deformation Real-time and Dynamic test device, its
It is characterised by, described coal deformation test system includes foil gauge, the deformeter data record system connecting by wire, institute
State foil gauge at the upper pressure head of coal sample tank.
5. under the negative pressure state described in a kind of any one of Claims 1-4, gas porous flow and coal body damage deformation Real-time and Dynamic survey
Trial assembly puts the method realizing gas porous flow and coal body damage deformation Real-time and Dynamic test under negative pressure state it is characterised in that including
Step:
Make coal sample first, post foil gauge and wire, then assemble instrument, coal body damage real-time monitored system is inserted coal sample
Pot bottom, and coal sample is placed on the top of this system, after assembling coal sample tank, by coal sample tank and gas gas cylinder, effusion meter and negative
Pressure control system, coal deformation test system connect, and then coal sample tank are placed in stress loading system, and set axial compression, enclose
Pressure numerical value and the inlet pressure value of coal sample pipe and the negative pressure value of the port of export；
After the good above Preparatory work of experiment of group, proceed by gas porous flow and coal body under condition of negative pressure and damage deformation real-time testing experiment；
After the completion of experiment, the coal body taking out in coal sample tank damages real-time monitored system, and the data of wherein miniature video camera is imported
It is analyzed to computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887880.8A CN106353478A (en) | 2016-10-11 | 2016-10-11 | Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887880.8A CN106353478A (en) | 2016-10-11 | 2016-10-11 | Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state |
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| Publication Number | Publication Date |
|---|---|
| CN106353478A true CN106353478A (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610887880.8A Pending CN106353478A (en) | 2016-10-11 | 2016-10-11 | Device and method for real-time dynamic testing on gas seepage and coal damage deformation in negative pressure state |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621288A (en) * | 2012-03-31 | 2012-08-01 | 中国矿业大学(北京) | Specimen case assembly for rock specimen experiment |
| CN103398903A (en) * | 2013-08-07 | 2013-11-20 | 重庆大学 | Gas-containing coal rock testing method |
| CN103399014A (en) * | 2013-08-07 | 2013-11-20 | 重庆大学 | Gas-containing coal rock true triaxial micromechanical test system |
| CN203534941U (en) * | 2013-11-14 | 2014-04-09 | 贵州大学 | Triaxial seepage test device under gas extraction condition |
| CN205607785U (en) * | 2016-04-29 | 2016-09-28 | 毛金峰 | Multi -functional shearing of rock experiment testing arrangement |
-
2016
- 2016-10-11 CN CN201610887880.8A patent/CN106353478A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621288A (en) * | 2012-03-31 | 2012-08-01 | 中国矿业大学(北京) | Specimen case assembly for rock specimen experiment |
| CN103398903A (en) * | 2013-08-07 | 2013-11-20 | 重庆大学 | Gas-containing coal rock testing method |
| CN103399014A (en) * | 2013-08-07 | 2013-11-20 | 重庆大学 | Gas-containing coal rock true triaxial micromechanical test system |
| CN203534941U (en) * | 2013-11-14 | 2014-04-09 | 贵州大学 | Triaxial seepage test device under gas extraction condition |
| CN205607785U (en) * | 2016-04-29 | 2016-09-28 | 毛金峰 | Multi -functional shearing of rock experiment testing arrangement |
Non-Patent Citations (1)
| Title |
|---|
| 聂百胜: "含瓦斯煤体孔隙结构与受载细观变形特征规律研究", 《煤炭科学技术》 * |
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Application publication date: 20170125 |
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