CN104569338B - A kind of coal and gas prominent tendentiousness determines device and method - Google Patents
A kind of coal and gas prominent tendentiousness determines device and method Download PDFInfo
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- CN104569338B CN104569338B CN201510002507.5A CN201510002507A CN104569338B CN 104569338 B CN104569338 B CN 104569338B CN 201510002507 A CN201510002507 A CN 201510002507A CN 104569338 B CN104569338 B CN 104569338B
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Abstract
A kind of coal and gas prominent tendentiousness determines device and method, device includes close encapsulation storehouse, the top in close encapsulation storehouse is provided with pressure gauge and air admission hole, the left side wall in close encapsulation storehouse is provided with bleeder port and pressure sensor, a pressure relief vent is provided with the right side wall in close encapsulation storehouse, the solid hole lock of closure pressure relief vent is provided with pressure relief vent, the bottom in close encapsulation storehouse is provided with dress and takes coal sample hole and take the closure that coal sample hole is engaged with dress.Coal sample particle is loaded in gas-tight silo, by injecting hole to methane gas are injected in gas-tight silo, makes the abundant adsorption gas of coal sample；Pressure gauge registration on storehouse to be sealed stablize it is constant after, quick handle of opening makes the unexpected release of gas-tight silo, coal sample is taken out afterwards, observe the broken situation of coal sample, if coal sample reduction, show that coal sample has outburst hazard under current pressure, the method can more intuitively react whether coal seam has prominent tendentiousness, and the degree of accuracy is higher.
Description
Technical field
Device and method is determined the present invention relates to a kind of coal and gas prominent tendentiousness, it is adaptable to the coal of different condition mine
The tendentious measure of protrusion of layer.
Background technology
Coal and gas prominent is a kind of complicated geology dynamic phenomenon, interrelated between its each prominent factor, is to cause
One of major casualty of down-hole accident, coal and gas prominent is predicted can effectively prevent the generation of disaster accident.
《Preventing and treating coal and gas prominent regulation》In it is manifestly intended that judging the gas used by the single index critical value of projecting coal bed identification
Pressure is relative gas pressure, and the critical value is 0.74MPa, i.e., face as differentiation coal seam whether there is the tendentious gas pressure of protrusion
Dividing value.But this unified critical methane pressure force value is not suitable for the actual conditions in each mining area, it is impossible to effectively instruct safety raw
Produce work and sensitively find dangerous.So,《Preventing and treating coal and gas prominent regulation》Also indicate that each ore deposit will according to this ore deposit environment,
Determine the critical pressure value of this ore deposit.However, can be to the prominent critical methane pressure in colliery coal seam there is presently no good method
Force value is measured.
The content of the invention
Technical problem：It is an object of the invention to provide a kind of method it is simple, intuitive and reliable can determine whether coal seam has
There is the tendentious device and method of protrusion.
Technical scheme：Coal and gas prominent tendentiousness of the invention determines device, including is located at the close encapsulation on support
Storehouse, the top in close encapsulation storehouse is provided with pressure gauge and air admission hole, and the left side wall in close encapsulation storehouse is provided with bleeder port and pressure is passed
Sensor, is provided with a pressure relief vent on the right side wall in close encapsulation storehouse, the solid hole lock of closure pressure relief vent, solid hole lock bag are provided with pressure relief vent
Lock arm, the fastening screw plug being located on lock arm and the handle snapped together with lock arm are included, the bottom in close encapsulation storehouse is provided with dress and takes
Coal sample hole and with dress take the closure that coal sample hole is engaged.
Two side is made to have an X-rayed sheet material before and after described close encapsulation storehouse.
Using the coal and gas prominent tendentiousness assay method of said apparatus, comprise the following steps：
A. the soft interstratified coal sample in coal seam, and filler test coal sample particle are obtained at the scene；
B. the coal sample particle of 10-100 is loaded in gas-tight silo, close encapsulation storehouse；
C. the abundant adsorption gas of coal sample are made to methane gas are injected in gas-tight silo by injecting hole；
D. the pressure gauge registration on storehouse to be sealed stablize it is constant after, gas pressure is labeled as P, and quick handle of opening makes sealing
The unexpected release in storehouse, takes out coal sample afterwards, observes the broken situation of coal sample；
If there is no fracture phenomena in coal sample, then it is assumed that the coal seam where coal sample does not have prominent tendentiousness at this pressure；
If there is Fragmentation Phenomena in coal sample, then it is assumed that the coal seam where coal sample has prominent tendentiousness at this pressure.
The particle diameter of the test coal sample is 1mm~50mm.
The gas pressure P is the actually measured maximum gas pressure in coal seam where coal sample.
Beneficial effect：Substantial amounts of fine coal can be produced after occurring due to coal and gas prominent, these fine coal are considered as coal
Layer there occurs physical explosion under high pressure gas effect.If the generation without coal dust, gas rate of release will be suppressed,
Gas is difficult to start lasting protrusion.Therefore, whether coal dust can be occurred under specific gas pressure physical explosion be used as coal with
The index of gas outburst risk prediction.The present invention can be tested to the coal sample of varying environment and the mine coal seam of condition, be surveyed
Determine whether coal seam has prominent tendentiousness under the conditions of the actually measured maximum gas pressure of Location, with《Preventing and treating coal and gas
Prominent regulation》The 0.74MPa of regulation this critical value is compared, and can more intuitively react whether coal seam has prominent tendentiousness,
And the degree of accuracy is higher.Step is simple, easily and effectively.Therefore, it is effectively to solve the above problems, researches and develops a kind of coal and gas prominent and incline
Tropism determines device and method, and physical explosion experiment is carried out to different mine coal samples, and coal seam is determined according to its broken situation
Prominent critical methane pressure force value, it is possible to determine the prominent tendentiousness in coal seam.
Brief description of the drawings
Fig. 1 is the structural representation that coal and gas prominent tendentiousness of the present invention determines device.
Fig. 2 is solid hole brake structure schematic diagram of the present invention.
In figure：1- pressure gauges；2- injecting holes；3- bleeder ports；4- pressure sensors；5- pressure relief vents；6 lock arms；7- fastens spiral shell
It is stifled；8- handles；9- closures；10- supports；11- pressure meter switches；12- gas-tight silos.
Specific embodiment
One embodiment of the present of invention is further described below in conjunction with the accompanying drawings：
Coal and gas prominent tendentiousness of the invention determines device, including sets close encapsulation storehouse 12 over the mount 10, seals
The top for closing gas-tight silo 12 is provided with pressure gauge 1 and air admission hole 2, and the left side wall in close encapsulation storehouse 12 is provided with bleeder port 3 and pressure
Sensor 4, is provided with a pressure relief vent 5 on the right side wall in close encapsulation storehouse 12, two side is before and after described close encapsulation storehouse 12
Formed depending on board making.The solid hole lock of closure pressure relief vent is provided with pressure relief vent 5, solid hole lock includes lock arm 6, is located on lock arm 6
Fastening screw plug 7 and the handle 8 snapped together with lock arm 6, the bottom in close encapsulation storehouse 12 is provided with dress and takes coal sample hole and taken with dress
The closure 9 that coal sample hole is engaged.
Coal and gas prominent tendentiousness assay method of the invention, comprises the following steps that：
A. the soft interstratified coal sample in coal seam is obtained at the scene, and screens the test coal sample of certain granules；The grain of the test coal sample
Footpath is 1mm~50mm.
B. closure 9 is opened, the coal sample particle of 10-100 is loaded in gas-tight silo 12, cover closure 9, closed close
Envelope storehouse 12；
C. pressure meter switch 11 is opened, to methane gas, gas injection pressure is injected in gas-tight silo 12 is coal sample by injecting hole 2
1.5 times of place coal seam highest reset pressure, coal sample is finely adjusted by bleeder port 3 after adsorption equilibrium to container inner pressure,
So that final adsorption equilibrium pressure is equal to the original maximum pressure in coal seam where coal sample.
D. the registration of pressure gauge 1 on storehouse to be sealed 12 stablize it is constant after, closing presure table switch 11, quickly beaten with safety hammer
Handle 8 is opened, lock arm 6 drives fastening screw plug 7 to unclamp the closure released to pressure relief vent 5, and the gases at high pressure inside container pass through release
Hole 5 is rushed out, and makes the unexpected release of gas-tight silo 12, and pressure sensor 4 is by pressure signal transmission to signal picker, and real time record is close
The process of gas pressure transient mutation in batten down；
E. to prevent test coal sample from being sprayed from pressure relief vent 5, one condom can be set in exit, closure is opened afterwards
9 take out coal sample, observe the broken situation of coal sample；
If there is no fracture phenomena in coal sample, then it is assumed that the coal seam where coal sample does not have prominent tendentiousness at this pressure；
If there is Fragmentation Phenomena in coal sample, then it is assumed that the coal seam where coal sample has prominent tendentiousness at this pressure.
Claims (3)
1. a kind of coal and gas prominent tendentiousness assay method, including use device：The device includes being located at support（10）On
Close encapsulation storehouse（12）, close encapsulation storehouse（12）Top be provided with pressure gauge（1）And air admission hole（2）, the close encapsulation storehouse
（12）Left side wall be provided with bleeder port（3）And pressure sensor（4）, close encapsulation storehouse（12）Right side wall on be provided with a release
Hole（5）, pressure relief vent（5）Place is provided with the solid hole lock of closure pressure relief vent, and solid hole lock includes lock arm（6）, be located at lock arm（6）On fastening
Screw plug（7）And with lock arm（6）The handle for snapping together（8）, close encapsulation storehouse（12）Bottom be provided with dress take coal sample hole and with
Dress takes the closure that coal sample hole is engaged（9）；Described close encapsulation storehouse（12）Front and rear two side is made for perspective sheet material,
Characterized in that, assay method is comprised the following steps：
A. the soft interstratified coal sample in coal seam, and filler test coal sample particle are obtained at the scene；
B. closure is opened（9）, the coal sample particle of 10-100 is loaded into gas-tight silo（12）It is interior, cover closure（9）, closing
Gas-tight silo（12）；
C. pressure meter switch is opened（11）, by injecting hole（2）To gas-tight silo（12）Interior injection methane gas, make coal sample abundant
Adsorption gas；Gas injection pressure is 1.5 times of coal seam highest reset pressure where coal sample, coal sample after adsorption equilibrium, by losing heart
Hole（3）Container inner pressure is finely adjusted so that final adsorption equilibrium pressure is equal to the original maximum pressure in coal seam where coal sample；
D. storehouse to be sealed（12）On pressure gauge（1）Registration stablize it is constant after, closing presure table switch（11）, it is fast with safety hammer
Speed opens handle（8）, lock arm（6）Drive fastening screw plug（7）Unclamp and release to pressure relief vent（5）Closure, the high pressure inside container
Gas passes through pressure relief vent（5）Rush out, make gas-tight silo（12）Unexpected release, pressure sensor（4）By pressure signal transmission to letter
Number collector, the process of gas pressure transient mutation in real time record sealed compartment；Gas pressure is labeled as P, quickly opens handle
（8）Make gas-tight silo（12）Coal sample is taken out after unexpected release, the broken situation of coal sample is observed；
If there is no fracture phenomena in coal sample, then it is assumed that the coal seam where coal sample does not have prominent tendentiousness at this pressure；
If there is Fragmentation Phenomena in coal sample, then it is assumed that the coal seam where coal sample has prominent tendentiousness at this pressure.
2. a kind of coal and gas prominent tendentiousness assay method according to claim 1, it is characterised in that：The test coal
The particle diameter of sample is 1mm ~ 50mm.
3. a kind of coal and gas prominent tendentiousness assay method according to claim 1, it is characterised in that：The gas pressure
Power P is the actually measured maximum gas pressure in coal seam where coal sample.
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| CN201510002507.5A CN104569338B (en) | 2015-01-05 | 2015-01-05 | A kind of coal and gas prominent tendentiousness determines device and method |
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| CN104569338B true CN104569338B (en) | 2017-06-09 |
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| CN105865929B (en) * | 2016-03-30 | 2019-01-04 | 中国科学院力学研究所 | A kind of rock type materials cracking properties pilot system and method |
| CN110850054A (en) * | 2019-12-04 | 2020-02-28 | 河南工程学院 | Coal and gas outburst simulation device |
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| CN2038582U (en) * | 1988-10-12 | 1989-05-31 | 江苏省扬中县机械仪表厂 | One-way valve with flow monitoring function |
| CN102353608B (en) * | 2011-07-08 | 2013-02-13 | 中国矿业大学 | Device and method for measuring prediction index critical value of coal and gas outburst |
| CN103884822B (en) * | 2014-04-15 | 2015-12-30 | 西安科技大学 | A kind of coal and gas prominent simulation system and method |
| CN204374196U (en) * | 2015-01-05 | 2015-06-03 | 中国矿业大学 | A kind of coal and gas prominent tendentiousness determinator |
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