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Outburst elimination method for outburst coal seam based on controllable shock wave permeability improvement

A technology of outburst coal seam and shock wave, which is applied in the outburst elimination field of outburst coal seam based on controllable shock wave anti-reflection, can solve the problems of easy hole collapse, poor suction effect, high use cost, etc., to reduce risk, pipeline installation and post-production Reduced maintenance costs and improved safety

Active Publication Date: 2021-04-27
西安闪光能源科技有限公司 +1
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the technical problems of high use cost, poor suction effect, easy hole collapse and other technical problems in the existing outburst coal seam downhole drilling along the bedding, and to provide an outburst coal seam anti-burst based on controllable shock wave anti-permeability. sudden method

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  • Outburst elimination method for outburst coal seam based on controllable shock wave permeability improvement
  • Outburst elimination method for outburst coal seam based on controllable shock wave permeability improvement
  • Outburst elimination method for outburst coal seam based on controllable shock wave permeability improvement

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with accompanying drawing.

[0058] A method for eliminating outbursts in outburst coal seams based on controllable shock wave anti-reflection, comprising the following steps:

[0059] 1) A first drilling site is set at the head of the preset roadway 2 on one side of the outburst coal seam 1 to be mined, and the anti-reflection drilling 3 is drilled along the tunneling direction of the preset roadway 2 on one side in the first drilling site; The depth of the anti-reflection borehole 3 used for shielding excavation is 150-210m;

[0060] 2) Use the controllable shock wave generating equipment 9 to perform shock wave anti-reflection operation on the anti-reflection borehole 3 for cover excavation, and then drain the gas in the hole until the gas pressure in the hole drops below 0.74 MPa, and the gas content per ton of coal drops to 6 -8m 3 Below (the specific value within this range shall be determined ...

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Abstract

The invention relates to a coal seam outburst elimination method, in particular to an outburst elimination method for an outburst coal seam based on controllable shock wave permeability improvement. The outburst elimination method for the outburst coal seam based on controllable shock wave permeability improvement aims at solving the technical problems that in an existing outburst elimination technology for underground bedding drilling of the outburst coal seam, the use cost is high, the suction effect is poor, and hole collapse is prone to happening. The method comprises the following steps of 1), drilling an permeability improvement drill hole for shield tunneling; 2), performing shock wave anti-reflection operation and gas extraction on the permeability improvement drill hole for shield tunneling; 3), tunneling a roadway; 4), drilling, permeability increasing and tunneling. specifically, 411), drilling a plurality of permeability improvement drill holes for outburst elimination in a plurality of areas, and performing shock wave permeability improvement operation and gas extraction; 421), drilling the permeability improvement drill hole for shield tunneling; and 431), tunneling the roadway again; 5), repeating until tunneling to a preset open-off cut position; and 6), tunneling the preset open-off cut and the preset roadway on the other side, and stoping the coal face.

Description

technical field [0001] The invention relates to a coal seam outburst elimination method, in particular to a outburst coal seam outburst elimination method based on controllable shock wave anti-permeability. Background technique [0002] Outburst in coal mine refers to the abnormal dynamic phenomenon in which broken coal (rock) and gas are suddenly thrown from the coal body or rock body to the mining space under the joint action of in-situ stress and gas. The duration of coal (rock) and gas outburst is very short, usually several seconds or tens of seconds. Because a large amount of coal (rock) and gas are suddenly thrown into the mining space, accompanied by strong mechanical effects, it is extremely destructive . If there is an open flame when protruding, it will cause gas explosion and secondary accidents such as coal dust explosion, which is one of the most serious disasters in coal mines. [0003] For outburst coal seams, safety production in coal mines requires in pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18E21F7/00
CPCE21C41/18E21F7/00
Inventor 汤俊萍张永民郭晓飞赵有志王平邱爱慈
Owner 西安闪光能源科技有限公司
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