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Coal seam permeability improvement method and device

A technology for drilling through coal seams and through seams, which is used in safety devices, earthwork drilling, gas discharge, etc., can solve problems such as low coal seam permeability, and achieve the effect of improving air permeability and increasing porosity.

Inactive Publication Date: 2016-03-30
HUAINAN MINING IND GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a coal seam anti-permeability method and device, which is used to solve the problem in the prior art that the gas permeability of the coal seam is still low after the coal seam is drilled through the seam

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  • Coal seam permeability improvement method and device
  • Coal seam permeability improvement method and device
  • Coal seam permeability improvement method and device

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] figure 1 It is the flow chart of embodiment one of the anti-permeability method of coal seam of the present invention, as figure 1 As shown, the method of this embodiment may include:

[0036] Step 101, drilling through the coal seam to obtain the first drilling hole;

[0037] Step 102, drilling through the coal seam to obtain a second b...

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Abstract

The invention provides a coal seam permeability improvement method and device. Crossing drilling is conducted on a coal seam, and first drilling holes are obtained; crossing drilling is further conducted on the coal seam, second drilling holes are obtained, and reaming is conducted on the second drilling holes; the situations that when crossing drilling is conducted on the coal seam and air permeability of the coal seam is still low, the second drilling holes are obtained by further conducting crossing drilling on the coal seam, and reaming is conducted on the second drilling holes are achieved, so that the porosity of the coal seam is further increased, and the air permeability of the coal seam is improved.

Description

technical field [0001] The invention relates to coal mining technology, in particular to a coal seam anti-reflection method and device. Background technique [0002] The air permeability of the coal seam is an important index to measure the gas pumpability of the coal seam. For the gas drainage of the low air permeability coal seam, special measures must be taken to increase the air permeability of the coal seam in order to effectively extract the gas. [0003] In the prior art, a method of increasing the air permeability of the coal seam is to use a drilling rig to drill through the coal seam; by drilling through the coal seam to obtain the drill hole, the porosity of the coal seam is increased, thereby increasing the air permeability of the coal seam. The permeability of the coal seam. [0004] However, in the prior art, there is a problem that the gas permeability of the coal seam is still low after the coal seam is drilled through the seam. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): E21F7/00
CPCE21F7/00
Inventor 李平曹建军高松袁本庆丰安祥易恩兵徐遵玉夏抗生张永将曹学军曾庆辉张迎贵郭忠凯
Owner HUAINAN MINING IND GRP
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