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Coal face lower section gas treatment method

A technology for coal mining face and working face, which is applied in the fields of gas emission, mining equipment, earth-moving drilling, etc., can solve the problems affecting the development of the coal industry, etc., to reduce the difficulty of gas management, reduce the intake gas, and reduce the gas The effect of governance

Pending Publication Date: 2022-04-01
GUIZHOU PANJIANG REFINED COAL
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, coal mining is subject to many constraints, such as: mine disasters such as water, fire, gas, coal dust, and roof collapse seriously affect the development of the coal industry

Method used

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  • Coal face lower section gas treatment method

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Embodiment 1

[0021] In order to ensure that the gas in the 231209 working face of the lower section will be controlled in advance, the gas control efforts in the mining working face of the lower section will be reduced. At the same time to reduce the air intake gas of the 231207 mining face, this embodiment adopts a gas control method for the section below the coal mining face. The coal seam gas in the lower section is pre-drained, and the gas in the 12# coal seam in the lower section is extracted through the long borehole in the construction section of the lower side of the 231207 roadway.

[0022] In this embodiment, further, the distance between the long boreholes in the section is 1.0 m to 3.0 m, and the diameter of the boreholes is φ94 mm.

[0023] In this embodiment, further, the end hole of the long borehole in the section is controlled along the inclination of the coal seam to 15.0m outside the contour line of the lower side of the transportation roadway in the working face of the ...

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Abstract

The invention discloses a method for treating gas in a lower section of a coal face. The method comprises the step of pre-pumping gas in a coal seam of the lower section in advance in a long drill hole in a construction section of a transportation roadway of the coal face by using time and space. The problem that in the prior art, gas control is difficult during mine deep mining is solved.

Description

technical field [0001] The invention relates to a section gas control method under a coal mining face, belonging to the technical field of coal mining. Background technique [0002] The development of society is inseparable from energy, and coal will still be the main energy source in our country in the present era. However, coal mining is subject to many constraints, such as: mine disasters such as water, fire, gas, coal dust, and roof collapse seriously affect the development of the coal industry. As the first of many disasters, gas has always been a major problem in coal mine safety production, seriously threatening the life safety of mine personnel and causing economic and property losses. With the development of science and technology, the application of coal mine gas is becoming more and more extensive. However, gas disasters and accidents frequently occur in the process of coal mining. Coal mine gas control has become the primary task of the development of coal minin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00E21B33/13
Inventor 吴学武谢春海周金恋史小强李兴伟彭华郑军校
Owner GUIZHOU PANJIANG REFINED COAL
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