High-gas multi-roadway no-coal-pillar mining method

A technology without coal pillars and gas, applied in surface mining, mining equipment, earth-moving drilling, etc., can solve the problems of many hidden dangers, high cost, unreasonable layout of long-wall working faces, etc., to ensure safe production and production. The effect of cost reduction, reduced maintenance effort and unsafe hazards

Inactive Publication Date: 2011-09-14
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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Problems solved by technology

[0005] The present invention aims to solve the problems of unreasonable arrangement of multi-lane longwall working faces in existing hi...

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the high-gas multi-lane coal pillar-free mining method is to arrange the main transportation system, auxiliary transportation system and ventilation system on the longwall working face, wherein the main transportation system includes the belt chute 3 opened on the lower side of the working face, and the Concentrated tape lane 8 in the middle of working face 1; auxiliary transportation system includes air inlet chute I5 and air inlet chute II 6 set up on the upper and lower sides of working face 1, and auxiliary transportation lane 8 in the middle of working face 1; ventilation The system includes the air inlet chute I5 and the air inlet chute II6 on both sides of the working face 1, the return air chute 4 on the upper side of the working face, and the centralized return air lane 7 in the middle of the working face 1. The air return la...

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Abstract

The invention relates to a coal mining method and discloses a high-gas multi-roadway no-coal-pillar mining method for solving the problems of high cost and more potential safety hazards caused by unreasonable arrangement of a multi-roadway long-wall working surface of the traditional high-gas mine. The method comprises a main conveying system, an auxiliary conveying system and a ventilation system, wherein the main conveying system comprises a belt roadway at the lower side of the working surface and a centralized rubber roadway in the middle of the working surface; the auxiliary conveying system comprises air inlet roadways at the upper and lower sides of the working surface and an auxiliary conveying roadway in the middle of the working surface; the ventilation system comprises air inlet roadways at the two sides of the working surface, an air return roadway at the upper side of the working surface, and a centralized air return roadway in the middle of the working surface; and the centralized air return roadway is communicated with the air return roadway through an air return roadway notch. According to the invention, four roadways are arranged in a 'three-in and one-return' manner, the loss of coal pillar is reduced, the maintenance workload and potential safety hazards caused by roadway remaining are reduced, and the production cost is remarkably lowered.

Description

technical field [0001] The invention relates to a coal mining method, in particular to a mining method for the arrangement and implementation of multi-lane longwall working faces in high-gas mines, in particular to a high-gas multi-lane mining method without coal pillars. Background technique [0002] According to the conditions of coal seam occurrence and gas emission, etc., in the mines that choose to adopt the long-wall comprehensive mechanized coal mining method, the multi-lane layout is adopted in the layout of the working face. The multi-lane layout mainly has the following advantages : (1) Multi-lane working face layout is adopted, with small ventilation resistance, large air volume at the working face, large gas exhausting capacity, and large gas dilution ability, which is conducive to the continuous production of the working face; (2) The return air lane side of the working face Most of them are "one entry and two loops" or "one entry and one loop" roadway layout. T...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21F1/00
Inventor 程建祯闫振东
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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