CN201277057Y - Fully-mechanized mining caving coal working surface top coal gas drainage apparatus - Google Patents

Fully-mechanized mining caving coal working surface top coal gas drainage apparatus Download PDF

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Publication number
CN201277057Y
CN201277057Y CNU2008200707760U CN200820070776U CN201277057Y CN 201277057 Y CN201277057 Y CN 201277057Y CN U2008200707760 U CNU2008200707760 U CN U2008200707760U CN 200820070776 U CN200820070776 U CN 200820070776U CN 201277057 Y CN201277057 Y CN 201277057Y
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China
Prior art keywords
coal
drainage
gas
extraction
fully
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Expired - Fee Related
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CNU2008200707760U
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Chinese (zh)
Inventor
秦长江
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QIN ZHANGJIANG
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QIN ZHANGJIANG
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Priority to CNU2008200707760U priority Critical patent/CN201277057Y/en
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Publication of CN201277057Y publication Critical patent/CN201277057Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a top-coal gas drainage device for preventing gas in coal mine down holes on the fully-mechanized top coal caving face, wherein a drainage tee (2) is internally equipped with a gasket (3) and welded at the right end of a fully-mechanized top coal caving support (1), a close nut (5) is movably connected to a lower port of the tee (2), an upper port thereof is communicated with a top coal drilled hole (4), and a lateral port is connected with a drainage mechanism. The utility model employs a drilling machine and utilizes the drainage tee arranged on the fully-mechanized miming support to bore top coal on the support, thereby communicating layered fractures of the top coal via the drilled hole, further, by aids of the drainage device, top coal gas is drained to a gas drainage system of the mine, thereby increasing gas drainage amount, efficiency and effect on the fully-mechanized top coal caving face, further effectively resolving the problem of overrun of gas outflow of the working face. The top-coal gas drainage device has simple structure, is safe, practical, highly efficient and reliable.

Description

Comprehensive extracting and caving face top coal gas drainage under suction device
Technical field:
The utility model relates to the comprehensive extracting and caving face top coal gas drainage under suction device that control gas uses under a kind of coal mine.
Background technology:
Gas is one of the major casualty in colliery, and it is perplexing the safety in production in colliery for a long time.The gas source of comprehensive extracting and caving face is mainly derived from work plane top coal.The top coal thickness of comprehensive extracting and caving face is more than 2 times of working surface coal mining machine coal cutting thickness often, and the pre-draining borehole of face up and down trough mainly is arranged in the middle bottom in coal seam in addition, and the source is deposited in the main tax that makes the top coal of fully-mechanized mining working become gas.There is the nip that unloads of two geostatic stress in comprehensive extracting and caving face: 0~5 meter in rib the place ahead, force piece top.In unloading nip, the stratiform crack in coal seam has obtained expansion, after the adsorption gas desorb of coal seam, to the migration of work plane goaf, then, pours into work plane from the goaf by the upper corner of coal discharge outlet and work plane along the stratiform crack, causes face gas to transfinite.
The measure and the approach of the control gas that the coal mine fully-mechanized mining top-coal caving face adopts at present are: strengthen that air quantity dilution gas, coal-face are taken out in advance in advance, the high position crack extraction of coal work face goaf and goaf pipe laying extraction.But because the limitation of measure, and the gas permeability in coal seam, take out the influence of phase in advance, the gas exceeding limit problem of comprehensive extracting and caving face can not get effective solution always, the caving coal place of the upper corner of work plane, support frame tail particularly, gas exceeding limit often occurs, cause fully-mechanized mining working often to stop production or stop the operation of frame tail drag conveyor.
The utility model content:
It is a kind of by the extraction device that the utility model provides, top coal gas drainage under suction in the gas drainage system of mine, the gas that effectively the solves work plane comprehensive extracting and caving face top coal gas drainage under suction device that the problem that transfinites is used of gushing out.In its extraction threeway 2 packing ring 3 is set, and is welded on mining support 1 right-hand member, closed nut 5 is movably connected in extraction threeway 2 lower port, and its upper port and coal borer hole, top 4 communicate, and side ports and extraction mechanism connect.The utility model adopts rig to lead to coal punching in top on the support by the extraction three that is located on the fully mechanized mining supporter, the stratiform crack of top coal is linked up in boring, by the extraction device, top coal gas drainage under suction in the gas drainage system of mine, gas drainage under suction amount, drainage efficient and the effect of comprehensive extracting and caving face have been improved, the problem of transfiniting thereby the gas that solves work plane is effectively gushed out.The structure of signing an undertaking is simple, safe and practical, high efficient and reliable.
Description of drawings:
Fig. 1 is a structural representation of the present utility model
The specific embodiment:
As shown in Figure 1, packing ring 3 is set in the extraction threeway 2, friction generation spark takes place in drilling rod and support when preventing to drill; And be welded on mining support 1 right-hand member, extraction threeway 2 lower port are provided with screw thread, and closed nut 5 is movably connected on the extraction threeway 2 lower port screw threads and seals, and its upper port and coal borer hole, top 4 communicate, and side ports and extraction mechanism connect.Extraction mechanism is no more than 1 cun steel pipe by support releasing pipe 6 by diameter and makes, right-hand member and the welding of extraction threeway 2 side ports connect, and be weldingly fixed on the mining support 1, left port is connected with the work plane releasing pipe 9 that is suspended on the bracket upright post back by mining flame-retardant sebific duct 8 by extraction by-pass valve control 7 and communicates, work plane releasing pipe 9 is a sebific duct, be suspended on fully mechanized mining supporter column rear side, can move or bending with fully mechanized mining supporter.
During operation, after the coal cutting of comprehensive extracting and caving face coal-winning machine, fully mechanized mining supporter chases after machine and moves frame.After moving frame, the workman that drills closes the extraction by-pass valve control, opens the closed nut in the extraction threeway, leads to the top coal hole of drilling by extraction three, until getting to roof, then, screws on closed nut, opens the extraction by-pass valve control, begins to enter the extraction state.Along with pushing ahead of work plane, the above-mentioned operation of cycling.

Claims (2)

1. comprehensive extracting and caving face top coal gas drainage under suction device, it is characterized in that being provided with in the extraction threeway (2) packing ring (3), and be welded on mining support (1) right-hand member, closed nut (5) is movably connected in extraction threeway (2) lower port, its upper port and coal borer hole, top (4) communicate, and side ports and extraction mechanism connect.
2. comprehensive extracting and caving face according to claim 1 top coal gas drainage under suction device, it is characterized in that extraction mechanism is connected with extraction threeway (2) side ports by support releasing pipe (6) right-hand member, left port is connected to communicate with the work plane releasing pipe (9) that is suspended on the bracket upright post back by mining flame-retardant sebific duct (8) by extraction by-pass valve control (7) and forms.
CNU2008200707760U 2008-05-29 2008-05-29 Fully-mechanized mining caving coal working surface top coal gas drainage apparatus Expired - Fee Related CN201277057Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200707760U CN201277057Y (en) 2008-05-29 2008-05-29 Fully-mechanized mining caving coal working surface top coal gas drainage apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200707760U CN201277057Y (en) 2008-05-29 2008-05-29 Fully-mechanized mining caving coal working surface top coal gas drainage apparatus

Publications (1)

Publication Number Publication Date
CN201277057Y true CN201277057Y (en) 2009-07-22

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Application Number Title Priority Date Filing Date
CNU2008200707760U Expired - Fee Related CN201277057Y (en) 2008-05-29 2008-05-29 Fully-mechanized mining caving coal working surface top coal gas drainage apparatus

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102116168A (en) * 2011-01-26 2011-07-06 河南理工大学 Gas drainage system and method for hyposmosis soft coal seams
CN102312661A (en) * 2010-07-01 2012-01-11 淮南矿业(集团)有限责任公司 Drilling gas blow-out preventing system
CN102678165A (en) * 2012-05-22 2012-09-19 淮南矿业(集团)有限责任公司 Integral combining device for extraction pipeline
CN103899350A (en) * 2014-04-28 2014-07-02 河南理工大学 Fully mechanized caving face supporting top coal gas extraction system
CN104763455A (en) * 2015-03-06 2015-07-08 河南理工大学 Frame-mounted gas drainage type top coal caving hydraulic support
CN104763461A (en) * 2015-03-06 2015-07-08 河南理工大学 Hydraulic bracket-carrying gas drainage device for fully mechanized top coal caving
CN104806284A (en) * 2015-03-06 2015-07-29 河南理工大学 Intelligent top-cave hydraulic support gas drainage device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102312661A (en) * 2010-07-01 2012-01-11 淮南矿业(集团)有限责任公司 Drilling gas blow-out preventing system
CN102116168A (en) * 2011-01-26 2011-07-06 河南理工大学 Gas drainage system and method for hyposmosis soft coal seams
CN102116168B (en) * 2011-01-26 2012-12-05 河南理工大学 Gas drainage system and method for hyposmosis soft coal seams
CN102678165A (en) * 2012-05-22 2012-09-19 淮南矿业(集团)有限责任公司 Integral combining device for extraction pipeline
CN103899350A (en) * 2014-04-28 2014-07-02 河南理工大学 Fully mechanized caving face supporting top coal gas extraction system
CN103899350B (en) * 2014-04-28 2016-03-16 河南理工大学 Fully mechanized coal face frame carries top coal gas drainage system
CN104763455A (en) * 2015-03-06 2015-07-08 河南理工大学 Frame-mounted gas drainage type top coal caving hydraulic support
CN104763461A (en) * 2015-03-06 2015-07-08 河南理工大学 Hydraulic bracket-carrying gas drainage device for fully mechanized top coal caving
CN104806284A (en) * 2015-03-06 2015-07-29 河南理工大学 Intelligent top-cave hydraulic support gas drainage device
CN104763455B (en) * 2015-03-06 2017-03-01 河南理工大学 Frame carries gas drainage under suction caving roof coal hydraulic support
CN104763461B (en) * 2015-03-06 2017-03-01 河南理工大学 A kind of mining hydraulic support frames carry gas drainage under suction device

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Addressee: Qin Changjiang

Document name: Notification of Termination of Patent Right

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090722

Termination date: 20110529

C17 Cessation of patent right