CN104515716B - Split type coal-gas adsorption desorption and outburst test device and test method - Google Patents

Split type coal-gas adsorption desorption and outburst test device and test method Download PDF

Info

Publication number
CN104515716B
CN104515716B CN201410748509.4A CN201410748509A CN104515716B CN 104515716 B CN104515716 B CN 104515716B CN 201410748509 A CN201410748509 A CN 201410748509A CN 104515716 B CN104515716 B CN 104515716B
Authority
CN
China
Prior art keywords
coal
gas
pressure
test
prominent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410748509.4A
Other languages
Chinese (zh)
Other versions
CN104515716A (en
Inventor
李术才
王汉鹏
李清川
袁亮
张庆贺
薛俊华
张冰
周伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University
Huainan Mining Group Co Ltd
Original Assignee
Shandong University
Huainan Mining Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University, Huainan Mining Group Co Ltd filed Critical Shandong University
Priority to CN201410748509.4A priority Critical patent/CN104515716B/en
Publication of CN104515716A publication Critical patent/CN104515716A/en
Application granted granted Critical
Publication of CN104515716B publication Critical patent/CN104515716B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a split type coal-gas adsorption desorption and outburst test device, which comprises a cylindrical coal sample chamber. The coal sample chamber is provided with several pressure temperature sensors able to detect molded coal temperature and gas pressure. Hydraulic loading equipment able to stretch into the coal sample chamber and apply axial ground stress is fixedly mounted at one end of the coal sample chamber, the other end is provided with a coal-gas blowout port communicated with the coal sample chamber during work, and a quick release mechanism is disposed at the coal-gas blowout port to control the blowout port breakover. The hydraulic loading equipment is connected to a piston rod through a universal joint, and the tail end of the piston rod is connected to a surface type inflation loading disc in contact with a coal sample placed in the coal sample chamber during test. The invention also discloses a test method using the device. The device and the method provided by the invention can research the adsorption desorption characteristics of coal to gas and the coal-gas outburst mechanism when molded coal is under different ground stress and gas pressure conditions.

Description

Split type coal is desorbed and prominent experimental rig and test method with gas adsorption
Technical field
The invention belongs to coal scientific research technical field, more particularly to a kind of to be used to carry out different crustal stress, different gas pressures Split type coal under the conditions of power is desorbed and prominent experimental rig and test method with gas adsorption.
Background technology
At present, coal and gas prominent is that a kind of extremely complex dynamic buckling phenomenon in underground coal mine occurs, and is colliery One of disaster of downhole production most serious, can cause coal and rock to hit or bury personnel in the pit, destroy the accidents such as down-hole facility, very To whole working face is destroyed, negatively affect extremely severe.Because occur underground coal mine coal and gas prominent have the time it is short, danger The features such as evil is big, the dangerous big reason of comprehensive enforcement research is carried out to live coal and gas prominent process, and scholars are at present Relying primarily on laboratory model research technique carries out the research and exploration of coal and gas prominent mechanism.
" comprehensive function hypothesis " is because consider the thing of crustal stress, gas pressure and coal comprehensively in coal and gas prominent mechanism Manage the factors such as mechanical property and be widely recognized as.But the factors such as the physico-mechanical properties of crustal stress, gas pressure and coal are each Real mechanism of action during protrusion is not correctly disclosed yet.Due to the nonlinearity of coal and gas prominent, using thing Reason analogy method research is the method for generally adopting at present.
At present, domestic and international related scientific research mechanism has carried out substantial amounts of coal and gas prominent analog simulation experimental study work Make, have developed a series of coal and gas prominent simulation test devices, present Research is as follows:
(1) Chinese patent of Application No. 200810069276.X discloses a kind of coal and gas prominent simulator stand, Invention, to coal sample axial pressure, by inflation inlet gas is filled into coal sample by multigroup hydraulic jack, and device aspis passes through Quick release mechanism is implemented mechanization and is automatically controlled, high speed opening aspis.
(2) Chinese patent of Application No. 200810233048.1 discloses a kind of coal and gas prominent mould, in base plate Central authorities offer air-filled pore, suction nozzle is installed in the air-filled pore;Location hole is opened up in the middle part of front end-plate, is installed in the location hole Aspis.
(3) Chinese patent of Application No. 200910103154.2 discloses a kind of coal and gas prominent compbined test dress Put, the device includes coal sampling mill, crustal stress simulated loading system and air pressure loading equipemtn, the force of crustal stress simulated loading system Capsule and charger are arranged in closed container, and the pressurizing channel of pressurising equipment is communicated with capsule wall interlayer, charger bag Include at least two loading blocks, coal sampling mill is surrounded by loading blocks, there is gap between adjacent load block, by pressure acquisition device and Cameras view result of the test.But the device can not carry out crustal stress loading.
(4) Chinese patent of Application No. 200910103155.7 discloses a kind of coal and gas prominent test quick pressure releasing Coal sampling mill, including coal sampling mill body, coal sampling mill body arranges blowout of coal and gas mouth and pressed gas import, and coal sprays with gas Outlet arranges control valve, and barrier film is arranged before control valve in coal sampling mill body, and barrier film and the cavity controlled between valve are counter balance pocket, Counter balance pocket arranges pressure balance gas feed.Pressure release adopts barrier film, and process of the test is complicated, it has not been convenient to operate.
(5) Chinese patent of Application No. 200910103157.6 discloses a kind of coal and gas prominent experimental rig, bag Coal sampling mill, air pressure-loading equipment are included, coal sampling mill arranges blowout of coal and gas mouth, and blowout of coal and gas mouth arranges control valve, air pressure The pressurized gas passage of loading equipemtn is communicated with inside coal sampling mill, and coal sampling mill is interior to arrange barrier film, barrier film and control before control valve Cavity between valve is the counter balance pocket for being connected to equilibrium air pressure loading equipemtn, also including the pressure acquisition device being arranged in coal sample room With the video camera being arranged on outside coal sampling mill, the coal sampling mill location transparency setting relative with video camera.But the device can not be carried out Crustal stress is loaded.
(6) Chinese patent of Application No. 201010149061.6 discloses a kind of coal and gas prominent simulated test dress Put, including steel cylinder, it is arranged on the ring flange at steel cylinder two ends, inflation system and data collecting system;It is arranged on the method for steel cylinder one end Blue disk is the ring flange with centre bore, and the non-installation side in the ring flange and steel cylinder arranges burst disk.But the device can not Carry out crustal stress loading.
(7) Chinese patent of Application No. 201110021828.1 discloses a kind of coal and gas experiment simulator, bag Coal sampling mill and air pressure loading equipemtn are included, at least one is provided with the coal sampling mill is used to place the coal sample die cavity of coal sample, air pressure Loading equipemtn includes gas gas cylinder and the pressurized gas passage that is connected with gas gas cylinder, when being provided with work on coal sampling mill and coal sample The blowout of coal and gas mouth of die cavity connection, is provided with the control device for controlling ejiction opening conducting, in coal sampling mill on ejiction opening The first camera for taking pictures to coal sample die cavity inside coal sample is provided with outward, and ejiction opening is provided with and is sprayed with gas for shooting coal The second camera for going out.
(8) coal and gas prominent mould when the Chinese patent of Application No. 201110324127.5 discloses a kind of stone door punching coal Intend pilot system, it includes that top is provided with the casing of opening, and the box opening is configured with paving in a loading steel plate, airtight cavity Top board and base plate are provided with, coal seam is equipped between top board and base plate, the coal seam forms an inclination angle, prominent simulation lane with horizontal plane Road extends up to be crossed with coal seam in base plate, and gas adopts face formula inflatable structure, aspis to arrange quick unlatching sealing structure.
The model test stand device system of the above-mentioned unit of comprehensive analysis, also has the following disadvantages:
1. above-mentioned simulation test device cannot realize that coal is tested with gas absorption;
2. above-mentioned experimental rig is no matter large or small, and its internal model is more based on cuboid, holds in model edge during loading Easily form stress concentration;
3. complex operation in above-mentioned model test apparatus process of the test, major part is only capable of qualitatively observing protrusion phenomenon, no Disposably can completely gather the transient changing of the parameters such as pressure and temperature in coal and gas prominent process of the test and protrusion phenomenon Rule, realizes quantitative analysis.
In order to preferably study different condition crustal stress and gas pressure Coal Under and gas absorption and coal with watt This projects mechanism and occurrence condition, needs to develop a kind of coal and desorbs and prominent experimental rig with gas adsorption, so as to explain coal with Gas Outburst characterization of adsorption and genesis mechanism.
The content of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of split type coal is desorbed with gas adsorption With prominent experimental rig and test method, its can study moulded coal different crustal stress, different gas pressure Coal Unders to watt This adsorption-desorption characteristics and coal and gas prominent mechanism.
For achieving the above object, the present invention adopts following technical proposals:
A kind of split type coal is desorbed and prominent experimental rig with gas adsorption, including a cylindrical shape coal sampling mill, on coal sampling mill It is provided with some temperature and pressure sensors that can detect moulded coal temperature and gas pressure, one end fixed installation of the coal sampling mill Having can be projecting axially into wherein and can apply the hydraulic loaded equipment of axial crustal stress, when the other end is provided with work and coal sampling mill The blowout of coal and gas mouth of connection, is provided with the quick release machine for controlling ejiction opening conducting at blowout of coal and gas mouth Structure;Hydraulic loaded equipment is connected by universal joint with piston rod, the coal sample being positioned over when piston-rod end and test in coal sampling mill The face formula inflation loading disc connection of contact;Axial crustal stress, the inner chamber that confined pressure passes through coal sampling mill are applied by hydraulic loaded equipment The counter-force of wall is provided, and realizes quasi- triaxiality loading, by controlling hydraulic loaded equipment pressure, simulates the different stress bars of moulded coal Part;
Duct is provided with the piston rod, duct one end is connected with a port of the threeway outside piston rod, threeway It is connected with gas gas cylinder and vacuum extraction equipment respectively on two other port, on the duct other end and face formula inflation loading disc Air slot communicate;
Described face formula inflation loading disc adopts the structure and technology of Application No. 201210227229.X patent;I.e.:Bag Inflation panel is included, inflation panel one end is connected with gas ducting, and gas ducting is provided with gas-filled switching tube, and the inflation panel includes Panel, panel is provided with the air slot for intersecting connection in length and breadth, and air slot is connected by the filling channel of panel end with gas ducting It is logical;Lower floor's sieve plate, steel wire and upper strata sieve plate, lower floor's sieve plate, steel wire, upper strata sieve plate are sequentially provided with above the panel Sealed by rubber weather strip with the edge junction of panel, and the upper sieve edges of boards edge in topmost arranges fixed press strip, Gu Level pressure bar is fixed on lower floor's sieve plate, steel wire, upper strata sieve plate on panel by bolt.
The quick release mechanism middle setting has the ejiction opening of Φ 60mm, and quick release mechanism includes upper and lower support, on Buckle is hinged with support, being hinged with lower carriage can be provided with buckle clamping and the c-type buckle of release, c-type buckle middle part Rotary screw, rotary screw end connection can seal the seal disc of ejiction opening.
By the activity of rotary screw adjustable sealing disk, during sealing, c-type buckle and buckle are blocked, adjust rotation spiral shell Bar compression seal disk seals blowout of coal and gas mouth;During release, c-type buckle is separated with buckle, under pressure and Action of Gravity Field Seal disc is rapidly separated with blowout of coal and gas mouth.
The cylindrical shape coal sampling mill, hydraulic loaded equipment, face formula inflation loading disc and quick release mechanism are fixedly mounted On bracing frame.
The threeway being connected with gas gas cylinder and vacuum extraction equipment is provided with controlling switch.
The face formula inflation loading disc is the inner chamber interference fits of disk structure part, its external diameter and cylindrical shape coal sampling mill, And can guarantee that the air-tightness of inner chamber.
The pressure-temperature sensor distinguishes connecting secondary instrument by data wire, for testing coal and gas adsorption and dashing forward Gas pressure and coal temperature change during going out.
Described coal is desorbed to be placed with prominent experimental rig ejiction opening front with gas adsorption and dashed forward with gas for recording coal Go out the high-speed camera of transient process.
A kind of test method desorbed using split type coal and gas adsorption with prominent experimental rig, including two stages, First stage is that coal is tested with the adsorption-desorption of gas, and second stage is coal and gas prominent test;
Coal is as follows with the adsorption-desorption test procedure of gas:
1) coal sample is mounted in coal sample room, threeway one end is connected into gas gas cylinder, other end connection vacuum extraction equipment, liquid Pressure loading equipemtn connection Hydraulic Station, disposes high-speed camera, and connects a whole set of experimental rig;
2) coal sample to be molded is further applied load with hydraulic loaded equipment, according to pre-set briquetting pressure by several times into Type;After coal sample shaping, blowout of coal and gas mouth, checkout facility container air-tightness are closed;
3) coal sampling mill is vacuumized with vavuum pump, applies pressure to moulded coal with hydraulic loaded equipment and keep pressure stability;
4) methane that purity is 99.9% is filled with into coal sampling mill by predetermined pressure, treats that coal sample room pressure reaches balance, portion Gas is divided to be adsorbed, portion gas are still with free state among residual volume, it is known that the methane volumetric for being filled with or releasing, button Except the free volume of residual volume, as adsorption volume;
5) repeat such measure, obtain each pressure stage balance pressure and adsorbent accumulated amount, couple together as absorption etc. Warm line;Complete coal to test with the adsorption-desorption of gas;
Coal and gas prominent test is as follows:
Moulded coal after axial crustal stress and gas pressure reach predetermined value in prominent experimental rig is effectively equivalent to one The individual coal seam containing " gas ", throwing open carries out the blowout of coal and gas mouth of temporary sealing using quick release mechanism, now by In the effect of gas pressure and simulated ground stress, make the energy that is stored in coal sampling mill from the release suddenly of blowout of coal and gas mouth and Complete the prominent test of coal and gas;
Experimental phenomena (project, extrude or pour out, do not project) is investigated, mechanical property of coal seam can be disclosed according to experimental condition With influence factor and mechanism of action of the loading environment to coal and gas prominent.
Prominent parameter to be determined has:Oil cylinder working-pressure, gas pressure, gas bearing capacity when coal sample briquetting pressure, protrusion, Gas flow, intensity of outburst, prominent distance, prominent coal particle size, prominent time etc..So the present invention can study moulded coal in difference Crustal stress, different gas pressure Coal Unders are to the adsorption-desorption characteristics and moulded coal of gas in different crustal stress, different gas pressures Coal and gas prominent characteristic under the conditions of power.
The invention has the beneficial effects as follows:
1st, the present invention can apply axial crustal stress by hydraulic jack, and confined pressure is provided by the counter-force of internal chamber wall, is realized accurate Triaxiality is loaded, and by controlling hydraulic jack pressure, simulates the different stress conditions of moulded coal.
2nd, coal sample of the present invention loads and duct is designed with the loading piston rod with experimental rig, duct outer end connecting tee, Be connected with gas gas cylinder and vacuum extraction equipment by threeway, realization vacuumize and methane gas filling, the duct other end with Face formula inflation loading disc is connected.Moulded coal is first vacuumized and is re-filled with gas by realization, more really simulates the absorption of coal and gas State.
3rd, coal sample of the invention loading is provided with the pressure temperature for detecting moulded coal temperature and gas pressure with experimental rig Degree sensor, can control gas pressure so as to simulate different gas pressures, realize moulded coal in different stress and gas pressure bar Adsorption-desorption and prominent test quantitative study under part.
4th, device ejiction opening implements Mechanical course by quick release mechanism, and high speed moment opens ejiction opening so as to suddenly Pressure release, more really simulates digging in-situ and causes coal and gas prominent.
5th, device ejiction opening front disposes high-speed camera for recording coal and gas prominent transient phenomenon, with coal with watt This transient phenomenon catches at a high speed, and record video can mutually confirm with pressure sensor data.
6th, present configuration is simple and convenient to operate and low manufacture cost, realizes quantitative simulation and research coal and gas prominent Purpose.
Description of the drawings
Fig. 1 is an instantiation structural representation of the invention;
Fig. 2 is an instantiation structure division sectional view of the invention;
Fig. 3 is quick release device structural representation in Fig. 1;
Fig. 4 is using test method schematic diagram of the present invention;
Wherein 1. hydraulic loaded equipment, 2. face formula inflation loading disc, 3. coal sampling mill, 4. pressure and temperature sensor, 5. fast Quick-release laying mechanism, 5-1. seal discs, 5-2. upper brackets, 5-3. buckles, 5-4.C type buckles, 5-5. lower carriages, 6. threeway, 7. ten thousand Xiang Jie, 8. structural support, 9. moulded coal, 10. hydraulic pressure station interface, 11. Hydraulic Stations, 12. high pressure gas gas cylinders, 13. coals are inhaled with gas Attached desorption and prominent experimental rig, 14. vavuum pumps, 15. high-speed cameras.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is further described.
As shown in Figure 1 and Figure 2:Coal is desorbed with gas adsorption includes hydraulic loaded equipment 1, coal sample with prominent experimental rig 13 Room 3, quick release mechanism 5, face formula inflation loading disc 2, pressure and temperature sensor 4 and structural support 8.Coal sampling mill 3, hydraulic pressure adds Load equipment 1, face formula inflation loading disc 2 and quick release mechanism 5 are each attached in structural support 8.It is provided with the coal sampling mill 3 For placing the coal sample die cavity of coal sample, gas passage connecting tee 6 is left on face formula inflation loading disc 2, two outlets are each in threeway 6 Placement controlling switch.Be provided with the collecting device 4 for detecting coal sample chamber internal pressure and temperature on coal sampling mill, the pressure and Temperature sensor 4 distinguishes connecting secondary instrument by data wire, for gas pressure during testing coal and gas adsorption and projecting Power and coal temperature change.
The blowout of coal and gas mouth connected with coal sampling mill when coal sampling mill end is provided with work, at blowout of coal and gas mouth The quick release mechanism 5 for controlling ejiction opening conducting is provided with, hydraulic loaded equipment 1 is added by universal joint 7 with the inflation of face formula Load plate 2 connects.Axial crustal stress is applied by hydraulic loaded equipment 1, the counter-force of the internal chamber wall that confined pressure passes through coal sampling mill 3 is provided, Quasi- triaxiality loading is realized, by controlling the pressure of hydraulic loaded equipment 1, the different stress conditions of moulded coal is simulated.
Piston rod is provided with duct, duct outer end connecting tee 6, by threeway 6 and high pressure gas gas cylinder 12 and vavuum pump 14 are connected, and realization is vacuumized and methane gas filling, and the duct other end is inflated the air slot on loading disc 2 and is connected with face formula It is logical.Moulded coal is first vacuumized and is re-filled with gas by realization, more really simulates the adsorbed state of coal and gas.
Face formula inflation loading disc adopts the structure and technology of Application No. 201210227229.X patent;I.e.:Including inflation Panel, inflation panel one end is connected with gas ducting, and gas ducting is provided with gas-filled switching tube, and the inflation panel includes panel, Panel is provided with the air slot for intersecting connection in length and breadth, and air slot is connected by the filling channel of panel end with gas ducting;Institute State and be sequentially provided with above panel lower floor's sieve plate, steel wire and upper strata sieve plate, lower floor's sieve plate, steel wire, upper strata sieve plate and face The edge junction of plate is sealed by rubber weather strip, and the upper sieve edges of boards edge in topmost arranges fixed press strip, fixed pressure Bar is fixed on lower floor's sieve plate, steel wire, upper strata sieve plate on panel by bolt.Face formula inflation loading disc is disk structure The inner chamber interference fits of part, its external diameter and cylindrical shape coal sampling mill, and can guarantee that the air-tightness of inner chamber.
As shown in Figure 3:It is the ejiction opening of Φ 60mm in the middle of quick release mechanism 5, including:Lower carriage 5-5, upper bracket 5-2, Seal disc 5-1, buckle 5-3, c-type buckle 5-4.C-type buckle 5-4 is hinged with lower carriage 5-5, and buckle 5-3 and upper bracket 5-2 cuts with scissors Connect, seal disc 5-1 is connected with c-type buckle 5-4 by rotary screw, by the activity of rotary screw adjustable sealing disk.Sealing When c-type buckle 5-4 is blocked with buckle 5-3, adjust rotary screw make seal disc 5-1 seal ejiction opening;By c-type buckle during release 5-4 is separated with buckle 5-3, and seal disc 5-1 is rapidly separated with ejiction opening under pressure with Action of Gravity Field.
As shown in figure 4, coal and gas adsorption desorb with the prominent ejiction opening of experimental rig 13 front place for record coal with The high-speed camera 15 of Gas Outburst transient process, Hydraulic Station 11 provides original by hydraulic pressure station interface 10 for hydraulic loaded equipment 1 Power, high pressure gas gas cylinder 12 and vavuum pump 14 are connected by threeway 6 with the duct on piston rod, realize being taken out in coal sampling mill 3 Vacuum is filled with methane gas.
It is divided into two stages when being tested using the present invention, the first stage is that coal is tested with the adsorption-desorption of gas, is connect As coal and gas prominent test.
Coal sample is mounted in coal sampling mill 3 first, the one end of threeway 6 is connected into gas gas cylinder, other end connection vacuum extraction sets Standby, hydraulic loaded equipment connection Hydraulic Station disposes high-speed camera, and connects other instruments.Wanted for 1 pair with hydraulic loaded equipment The coal sample of shaping is further applied load, and is molded by several times according to pre-set briquetting pressure.After coal sample shaping, ejiction opening, inspection are closed Look into test chamber air-tightness.Coal sampling mill is vacuumized with vavuum pump, is applied pressure to moulded coal 9 with hydraulic loaded equipment and is kept pressure Power is stablized.The methane of high pressure, high purity 99.9% is filled with into coal sampling mill.Treat that coal sample room pressure reaches balance, portion gas are adsorbed, Portion gas are still with free state among residual volume, it is known that be filled with the methane volumetric of (releasing), deduct residual volume Free volume, as adsorption volume.Repeat such measure, obtain each pressure stage balance pressure and adsorbent accumulated amount, connect Come as adsorption isotherm.Complete coal to test with the adsorption-desorption of gas.
Treat that crustal stress and gas pressure reach the moulded coal that predetermined value processus aboralis goes out in analogue means and be effectively equivalent to one to contain The coal seam of " gas ", throwing open carries out the ejiction opening of temporary sealing using quick release mechanism, now due to gas pressure and The effect of pressure simulation crustal stress, makes the energy being stored in coal sampling mill discharge suddenly from ejiction opening and complete the prominent of coal and gas Go out test.
Experimental phenomena (project, extrude or pour out, do not project) is investigated, mechanical property of coal seam can be disclosed according to experimental condition With influence factor and mechanism of action of the loading environment to coal and gas prominent.Prominent parameter to be determined has:Coal sample shaping pressure Power, oil cylinder working-pressure, gas pressure, gas bearing capacity, gas flow, intensity of outburst, prominent distance, prominent coal particle size when prominent, Prominent time etc..So the present invention can study suction of the moulded coal in different crustal stress, different gas pressure Coal Unders to gas The attached desorption properties and moulded coal coal and gas prominent characteristic under the conditions of different crustal stress, different gas pressures.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to present invention protection model The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.

Claims (7)

1. a kind of split type coal and gas adsorption are desorbed and prominent experimental rig, and coal sampling mill is provided with and some can detect moulded coal temperature The pressure and temperature sensor of degree and gas pressure, the blowout of coal and gas mouth connected with coal sampling mill when one end is provided with work, The quick release mechanism for controlling ejiction opening conducting is provided with blowout of coal and gas mouth, be it is characterized in that, including a cylindrical shape Coal sampling mill, the other end of the coal sampling mill is installed with the hydraulic pressure that can be projecting axially into wherein and can apply axial crustal stress Loading equipemtn, hydraulic loaded equipment is connected by universal joint with piston rod, is positioned in coal sampling mill when piston-rod end and test Coal sample contact the inflation loading disc connection of face formula;
The piston rod is provided with duct, and duct one end is connected with a port of the threeway outside piston rod, and threeway is in addition It is connected with gas gas cylinder and vacuum extraction equipment respectively on two ports, the duct other end is communicated with face formula inflation loading disc;
The quick release mechanism middle setting ejiction opening, quick release mechanism includes upper and lower support, and card is hinged with upper bracket Button, being hinged with lower carriage can be provided with rotation on c-type buckle with the buckle clamping and the c-type buckle of release by screw thread Screw rod, rotary screw end connection can seal the seal disc of blowout of coal and gas mouth;
The activity of seal disc can be adjusted by rotary screw, during sealing, c-type buckle is blocked with the buckle, adjusting screw pressure Contracting seal disc seals blowout of coal and gas mouth;During release, c-type buckle is separated with the buckle, under pressure and Action of Gravity Field Seal disc is rapidly separated with blowout of coal and gas mouth.
2. device as claimed in claim 1, is characterized in that, the cylindrical shape coal sampling mill, hydraulic loaded equipment, the inflation of face formula add Load plate and quick release mechanism are fixedly installed on bracing frame.
3. device as claimed in claim 1, is characterized in that, the threeway being connected with gas gas cylinder and vacuum extraction equipment It is provided with controlling switch.
4. device as claimed in claim 1, is characterized in that, the face formula inflates loading disc for disk structure part, its external diameter With the inner chamber interference fits of cylindrical shape coal sampling mill, and the air-tightness of inner chamber is can guarantee that.
5. device as claimed in claim 1, is characterized in that, the pressure and temperature sensor connects respectively two by data wire Secondary instrument, for gas pressure during testing coal and gas adsorption and projecting and coal temperature change.
6. device as claimed in claim 1, is characterized in that, described blowout of coal and gas mouth front place for record coal with The high-speed camera of Gas Outburst transient process.
7. device as claimed in claim 6, is characterized in that, including two stages, and the first stage is the absorption solution of coal and gas Test is inhaled, second stage is coal and gas prominent test;
Coal is as follows with the adsorption-desorption test procedure of gas:
1) coal sample is mounted in coal sample room, threeway one end is connected into gas gas cylinder, other end connection vacuum extraction equipment, hydraulic pressure adds Load equipment connects Hydraulic Station, disposes high-speed camera, and connects a whole set of experimental rig;
2) coal sample to be molded is further applied load with hydraulic loaded equipment, is molded by several times according to pre-set briquetting pressure; After coal sample shaping, blowout of coal and gas mouth, checkout facility container air-tightness are closed;
3) coal sampling mill is vacuumized with vacuum extraction equipment, applies pressure to moulded coal with hydraulic loaded equipment and keep pressure steady It is fixed;
4) methane that purity is 99.9% is filled with into coal sampling mill by predetermined pressure, treats that coal sample room pressure reaches balance, part gas Body is adsorbed, and portion gas are still with free state among residual volume, it is known that the methane volumetric for being filled with or releasing, and deducts surplus The free volume of remaining volume, as adsorption volume;
5) repeat such measure, obtain each pressure stage balance pressure and adsorbent accumulated amount, couple together as adsorption isotherm; Complete coal to test with the adsorption-desorption of gas;
Coal and gas prominent test is as follows:
Moulded coal after axial crustal stress and gas pressure reach predetermined value in prominent experimental rig is effectively equivalent to one and contains The coal seam of " gas ", throwing open carries out the blowout of coal and gas mouth of temporary sealing using quick release mechanism, now due to watt The effect of this pressure and simulated ground stress, makes the energy being stored in coal sampling mill complete from the release suddenly of blowout of coal and gas mouth Coal is tested with the prominent of gas.
CN201410748509.4A 2014-12-09 2014-12-09 Split type coal-gas adsorption desorption and outburst test device and test method Active CN104515716B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410748509.4A CN104515716B (en) 2014-12-09 2014-12-09 Split type coal-gas adsorption desorption and outburst test device and test method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410748509.4A CN104515716B (en) 2014-12-09 2014-12-09 Split type coal-gas adsorption desorption and outburst test device and test method

Publications (2)

Publication Number Publication Date
CN104515716A CN104515716A (en) 2015-04-15
CN104515716B true CN104515716B (en) 2017-04-19

Family

ID=52791345

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410748509.4A Active CN104515716B (en) 2014-12-09 2014-12-09 Split type coal-gas adsorption desorption and outburst test device and test method

Country Status (1)

Country Link
CN (1) CN104515716B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105784490A (en) * 2016-03-01 2016-07-20 山东科技大学 Visual monitoring experiment device for coal body damage under gas pressure relief condition
CN105891429B (en) * 2016-06-27 2017-09-22 河南理工大学 The coal and gas prominent analogue means and test method of repeatable experiment
CN105938077B (en) * 2016-07-06 2018-08-17 河南理工大学 Coal borer bits desorption of mash gas instrument equipped with coal sample bottle ejector and its test method
CN107515289B (en) * 2017-10-25 2020-03-17 辽宁工程技术大学 Coal and gas outburst simulation test device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101226183A (en) * 2008-01-22 2008-07-23 重庆大学 Projecting simulator stand for coal and firedamp
CN103529179A (en) * 2013-10-30 2014-01-22 中煤科工集团重庆研究院有限公司 Method for coal and gas outburst simulation experiment
CN103776979A (en) * 2014-01-10 2014-05-07 河南理工大学 Simulation test method and device for inhibiting methane desorption effect by coal seam water injection

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1247883A (en) * 1985-09-19 1989-01-03 John D. Savage Delta p instrument for oxidation measurement
RU2019706C1 (en) * 1992-04-15 1994-09-15 Сергей Анатольевич Радченко Method for determination of outburst-prone zones and gas-bearing capacity in face zone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101226183A (en) * 2008-01-22 2008-07-23 重庆大学 Projecting simulator stand for coal and firedamp
CN103529179A (en) * 2013-10-30 2014-01-22 中煤科工集团重庆研究院有限公司 Method for coal and gas outburst simulation experiment
CN103776979A (en) * 2014-01-10 2014-05-07 河南理工大学 Simulation test method and device for inhibiting methane desorption effect by coal seam water injection

Also Published As

Publication number Publication date
CN104515716A (en) 2015-04-15

Similar Documents

Publication Publication Date Title
CN104458490B (en) True triaxial coal is desorbed with gas adsorption and prominent test device systematic and test method
CN104407108B (en) Integral type coal and non-coal adsorption-desorption and outstanding testing apparatus and test method
CN104515716B (en) Split type coal-gas adsorption desorption and outburst test device and test method
CN106918531A (en) Can be used for multiphase coupled sound combination loading rock test rig and test method
CN103529179B (en) Method for coal and gas outburst simulation experiment
CN204286978U (en) True triaxial coal and non-coal adsorption-desorption and outstanding test device systematic
CN101226183B (en) Projecting simulator stand for coal and firedamp
CN105910913B (en) Shock loading induces coal and gas prominent pilot system and method under raw coal sample
CN201285392Y (en) Mold for coal and firedamp projecting simulator experiment
CN106226502B (en) Deep high-ground stress coal and rock dynamic disaster and displacement simulation pilot system and method
CN104614298B (en) Constant-volume gas-bearing coal gas-solid coupling physical and mechanical parameter testing device and testing method
CN101419146B (en) Coal and mash gas extrusion mold
CN201241707Y (en) Tunnel upward floating model trial apparatus
Cao et al. A novel large-scale three-dimensional apparatus to study mechanisms of coal and gas outburst
CN108444885B (en) Tunnel filling structure seepage, erosion and stress coupling instability test device and method
CN103132971A (en) Test simulating device for improving recovery rate of coal bed methane by injecting carbon dioxide
CN104865176A (en) Seepage experiment system and method for gas-containing coal under action of impact load
CN204286979U (en) Split type coal and non-coal adsorption-desorption and outstanding test unit
CN105300603B (en) The testing equipment of class rectangle shield tail sealing performance
CN203606354U (en) Coal and gas prominent infiltration instability test device
CN204287148U (en) Unitary coal and gas adsorption desorb and outstanding test unit
CN101226184A (en) Terrane stress simulation clamping device
CN106525526B (en) A kind of measuring method of the high pressure water injection of raw coal containing gas and radial gas permeation rate
CN103529188A (en) Coal and gas outburst permeation instability test device
CN105911249B (en) Simulate the test method of sandy soils erodsion loss around duct pieces of shield tunnel seam

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
GR01 Patent grant