CN103016049A - Comprehensive treatment method of gas on firstly mined permian system working face - Google Patents
Comprehensive treatment method of gas on firstly mined permian system working face Download PDFInfo
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- CN103016049A CN103016049A CN2012105655195A CN201210565519A CN103016049A CN 103016049 A CN103016049 A CN 103016049A CN 2012105655195 A CN2012105655195 A CN 2012105655195A CN 201210565519 A CN201210565519 A CN 201210565519A CN 103016049 A CN103016049 A CN 103016049A
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Abstract
The invention discloses a comprehensive treatment method of gas on a firstly mined permian system working face, which solves the problem that accidents such as explosion and fire are easy to cause due to outburst of the gas on the working face. The method comprises the following steps: constructing a first drill site at the part that a working face air return way is 70 meters apart from the working face; arranging a drill site every 40 meters; forming holes on the drill site along a top plate of the air return way, wherein each drill hole is arranged to be in a fan shape, the elevation angle of the drill hole is 6-9 degrees; a casing pipe is arranged in a coal body when the holes are drilled; and the depth of the casing pipe to a rock top is 1-2 meters; b, laying a DN 400mm pipe on the air return way in front of an advance support of the working face, wherein the two ends of the DN 400mm pipe are respectively communicated with a steel framework air barrel of which the diameter is 500mm, and a casing pipe hung at an upper corner, and the drainage amount is 50-75m<3>/min; and arranging an L-shaped windbreak on the air return way; c, top pouring malisan on the working surface; and d, arranging an exhaust fan in the air return way, wherein the exhaust fan is connected with a positive pressure air barrel, and is connected with a negative pressure air barrel; the other end of a glass-reinforced plastic air barrel is connected with a telescopic air barrel; and the air mount of the exhaust fan is 284m<3>/min. With the adoption of the method, safe production of mines can be guaranteed.
Description
Technical field
The present invention relates to mash gas harnessing method, be specially the first mining face Comprehensive Gas Control of a kind of Permian System method.
Background technology
Coal and Gas Outburst are one of serious natural calamities in the process of coal mining, it is coal and rock quick crashing around the getting working face, follow coal petrography to dish out to the tunnel or a kind of extremely complicated dynamic phenomenon of mobile and the gas that pours out, can cause casualties and be ruined with the roadway electromechanical equipment, destroy mine ventilation system, in coal and Gas Outburst, easily cause gas explosion and fire incident.
In recent years, along with the increase of mining depth, some low gaseous mines or highly gassy mine progressively become projecting mine, and outstanding number of times day by day increases, and the disaster that causes is day by day serious.
Summary of the invention
The present invention provides the first mining face Comprehensive Gas Control of a kind of Permian System method in order to solve the problem that existing first mining face Gas Outburst easily sets off an explosion and fire incident occurs.
The present invention adopts following technical scheme to realize: the first mining face Comprehensive Gas Control of Permian System method, adopt following steps: a, tailentry first drill site of constructing apart from 70 meters of work plane, every 40 meters a drill site is set subsequently, drill site is along the back perforate, and each boring is fan-shaped layout, the elevation angle of boring is 6-9 °, and at when boring setting of casing in the coal body, tubing depth is pushed up 1-2 rice for entering rock; B, return airway are laid the DN400mm pipeline to the ahead work face supporting, the two ends of DN400mm pipeline are communicated with the steel frame air duct of diameter 500mm and the sleeve pipe of hanging at the upper corner place respectively, drawing and deflating flux is 50-75m3/min, and beats " L " type air partition at return airway; C, work plane teeming horse are beautiful loose; Be provided with the pump drainage blower fan in d, the return airway, the positive pressure wind pipe that the pump drainage blower fan connects adopts the soft air duct of 1000mm, the negative pressure air duct that the pump drainage blower fan connects adopts the 800mm glass fiber reinforced plastic wind tube, and the other end of glass fiber reinforced plastic wind tube is connected with the 1000mm Telescopic air duct, and the pump drainage fan delivery is 284m3/min.
The structure design of drill site draws by repetition test repeatedly, be difficult for the hole of collapsing, stop to hole plug-hole or scrap the generation of phenomenon, the arranging of the boring elevation angle being communicated with of Kong Houneng and goaf that guaranteed to collapse, and overcome by the extraction of upper corner pipe laying, high-order oblique angle drilling-draining, the rationally setting of work plane air distribution amount and air partition that existing first mining face Gas Outburst easily sets off an explosion and the problem of fire incident generation.
The present invention takes comprehensive means to administer after damp, work plane intake volume 2653m3/min, return air air quantity 2150 m3/min, upper corner extraction air-out 133 m3/min, high-order oblique drilling-draining air-out 60 m3/min, pump drainage blower fan air-out 331 m3/min, gold-plating tail gas density 0.17-0.2%, upper corner gas density 0.25-0.28%, face gas concentration 0.22-0.24%, return gas density 0.4～0.5 %; And make a call to less a top return airway, and reduce expenses 3,000,000 yuan, can make exploitation carry the previous year simultaneously, guaranteed mine safety production, the employee's life security that greatly ensures.
The specific embodiment
The first mining face Comprehensive Gas Control of Permian System method, adopt following steps: a, tailentry first drill site of constructing apart from 70 meters of work plane, every 40 meters a drill site is set subsequently, drill site is along the back perforate, and each boring is fan-shaped layout, the elevation angle of boring is 6-9 °, and at when boring setting of casing in the coal body, tubing depth is pushed up 1-2 rice for entering rock; B, return airway are laid the DN400mm pipeline to the ahead work face supporting, the two ends of DN400mm pipeline are communicated with the steel frame air duct of diameter 500mm and the sleeve pipe of hanging at the upper corner place respectively, drawing and deflating flux is 50-75m3/min, and beats " L " type air partition at return airway; C, work plane teeming horse are beautiful loose; Be provided with the pump drainage blower fan in d, the return airway, the positive pressure wind pipe that the pump drainage blower fan connects adopts the soft air duct of 1000mm, the negative pressure air duct that the pump drainage blower fan connects adopts the 800mm glass fiber reinforced plastic wind tube, and the other end of glass fiber reinforced plastic wind tube is connected with the 1000mm Telescopic air duct, and the pump drainage fan delivery is 284m3/min.
Claims (1)
1. the first mining face Comprehensive Gas Control of Permian System method, it is characterized in that: adopt following steps: a, tailentry first drill site of constructing apart from 70 meters of work plane, every 40 meters a drill site is set subsequently, drill site is along the back perforate, and each boring is fan-shaped layout, the elevation angle of boring is 6-9 °, and at when boring setting of casing in the coal body, tubing depth is pushed up 1-2 rice for entering rock; B, return airway are laid the DN400mm pipeline to the ahead work face supporting, the two ends of DN400mm pipeline are communicated with the steel frame air duct of diameter 500mm and the sleeve pipe of hanging at the upper corner place respectively, drawing and deflating flux is 50-75m3/min, and beats " L " type air partition at return airway; C, work plane teeming horse are beautiful loose; Be provided with the pump drainage blower fan in d, the return airway, the positive pressure wind pipe that the pump drainage blower fan connects adopts the soft air duct of 1000mm, the negative pressure air duct that the pump drainage blower fan connects adopts the 800mm glass fiber reinforced plastic wind tube, and the other end of glass fiber reinforced plastic wind tube is connected with the 1000mm Telescopic air duct, and the pump drainage fan delivery is 284m3/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210565519.5A CN103016049B (en) | 2012-12-24 | 2012-12-24 | Comprehensive treatment method of gas on firstly mined permian system working face |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210565519.5A CN103016049B (en) | 2012-12-24 | 2012-12-24 | Comprehensive treatment method of gas on firstly mined permian system working face |
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| CN103016049A true CN103016049A (en) | 2013-04-03 |
| CN103016049B CN103016049B (en) | 2014-12-17 |
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| CN201210565519.5A Active CN103016049B (en) | 2012-12-24 | 2012-12-24 | Comprehensive treatment method of gas on firstly mined permian system working face |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869967A (en) * | 2017-04-05 | 2017-06-20 | 中煤科工集团西安研究院有限公司 | The routed sand remote jet disturbance grouting method of driving face gushing water |
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2012
- 2012-12-24 CN CN201210565519.5A patent/CN103016049B/en active Active
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| CN101029577A (en) * | 2007-04-02 | 2007-09-05 | 中国矿业大学 | Method for extracting released-gas of protected coal-bedding under unstabilized thin coal bedding set condition |
| CN101349157A (en) * | 2008-09-01 | 2009-01-21 | 宜兴市星洲复合材料有限公司 | Integral organic glass fiber reinforced plastic wind pipe and manufacture thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106869967A (en) * | 2017-04-05 | 2017-06-20 | 中煤科工集团西安研究院有限公司 | The routed sand remote jet disturbance grouting method of driving face gushing water |
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| CN103016049B (en) | 2014-12-17 |
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