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Method for elimination of outburst risks of coal beds in two areas through adoption of bedding orientation long drill 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: 2019-01-15
HUAINAN MINING IND GRP
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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 elimination of outburst risks of coal beds in two areas through adoption of bedding orientation long drill holes
  • Method for elimination of outburst risks of coal beds in two areas through adoption of bedding orientation long drill holes
  • Method for elimination of outburst risks of coal beds in two areas through adoption of bedding orientation long drill 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 present invention discloses a method for elimination of outburst risks of coal beds in two areas through adoption of bedding orientation long drill holes. A drilling machine is employed for orientation construction of a plurality of bedding orientation long drill holes at an air return way of a coal face, each bedding orientation long drill hole penetrates the coal face coal extraction area coal bed and a coal road band coal bed to be extracted; and the bedding orientation long drill holes are employed to extract the gas in the sectional coal bed air return areas and the coal road band coal bed to be extracted. Through adoption of a system of wireless measurement while drilling and a pneumatic screw motor, the orientation drilling is achieved so as to greatly improve the bedding drilling coal rate and ensure the drill hole removing outburst effect; and moreover, the bedding orientation long drill holes are constructed at the coal face air return way to complete the synchronous removing outburst of the coal face coal extraction area coal bed and the coal road band coal bed to be extracted so as to avoid high-cost gas treatment stone head construction.

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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00
CPCE21F7/00
Inventor 赵俊峰刘德贵李勇石德洲章恒张安东
Owner HUAINAN MINING IND GRP
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