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Method for eliminating outburst risk of two regional coal seams by using long bedding directional drilling holes

A technology for long drilling and coal seams, which is applied in earthwork drilling, gas discharge, safety devices, etc., and can solve problems such as high cost, time-consuming and labor-intensive, and poor effect

Inactive Publication Date: 2019-12-03
HUAINAN MINING IND GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the existing section coal seam gas control method is time-consuming, laborious, high in cost and poor in effect

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  • Method for eliminating outburst risk of two regional coal seams by using long bedding directional drilling holes
  • Method for eliminating outburst risk of two regional coal seams by using long bedding directional drilling holes
  • Method for eliminating outburst risk of two regional coal seams by using long bedding directional drilling holes

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Embodiment Construction

[0024] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0025] This embodiment discloses a method for eliminating the danger of coal seam outburst in two areas by directional long drilling along the bedding. A number of directional long drilling along the bedding is oriented by using a drilling rig in the backflow channel of the coal mining face. The boreholes all penetrate the coal seam in the mining area of ​​the coal mining face and the strip coal seam of the coal roadway to be excavated; of gas. The schematic diagram of the method is shown in figure 2 shown.

[0026] The following is an example of implementing the above-mentioned method of eliminating the danger of coal seam outburst in two areas by bedding directional long drilling in a working face of Pansan Mine in Huainan, and specifi...

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Abstract

The invention discloses a method for eliminating outburst risk of two regional coal seams by using long bedding directional drilling holes. The method comprises the following steps of directionally constructing a plurality of long bedding directional drilling holes in a return-air gate of the coal working face by adopting a drilling rig, wherein each long bedding directional drilling hole penetrates through a stoping area coal seam and a to-be-excavated coal roadway strip coal seam of the coal working face; and then extracting gas in the stoping area of a sectional coal seam and the to-be-excavated coal roadway strip coal seam by using multiple groups of long bedding directional drilling holes. The method disclosed by the invention has the advantages that directional drilling is realized by using a wireless measurement system while drilling and a pneumatic screw motor, so that the coal exposing rate of bedding drilling is greatly improved, and the outburst elimination effect of drilling is ensured; the long bedding directional drilling holes are constructed in the return-air gate of the coal working face, and the outburst of the stoping area coal seam and a to-be-excavated coal roadway strip coal seam of the coal working face is simultaneously eliminated, so that high-cost gas control rock roadway construction is avoided.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety production, and in particular relates to a method for eliminating the danger of coal seam outburst in two regions by directional long drilling along the bedding. Background technique [0002] Coal seams in the Huainan mining area have the characteristics of high gas, low air permeability, soft and broken, and gas control mainly adopts underground drilling and extraction. like figure 1 Shown is the traditional gas control for the mining area of ​​the coal mining face and the gas control of the coal seam in the coal roadway. The gas treatment in the mining area of ​​the coal mining face mainly adopts two lanes of the coal mining face to drill holes along the bedding to eliminate outbursts. This method has the disadvantages of low coal penetration rate and limited drilling depth. For the gas control of strip coal seams in coal roadways, the special gas control rock roadway for constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00
CPCE21F7/00
Inventor 赵俊峰王毅童碧张杰刘德贵张纯如李勇黄寒静石德洲李点尚刘文军侯红章恒徐保龙张安东
Owner HUAINAN MINING IND GRP
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