Goaf waste rock filling coal mining method of flexible shield support in half-edge coal seam

A flexible shielding support and backfill coal mining technology, which is applied in backfill, ground mining, mining equipment and other directions to protect the ecological environment, promote harmonious development, and avoid transportation tension.

Active Publication Date: 2013-04-24
BEIJING HAOHUA ENERGY RESOURCE
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a coal mining method with gangue filling in goafs with flexible cover supports for steeply inclined coal seams, which can realize safe production of steeply inclined coal seams and at the same time solve the problem of disposal of gangue produced in underground coal mines

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  • Goaf waste rock filling coal mining method of flexible shield support in half-edge coal seam

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Embodiment Construction

[0041] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] (1) Roadway layout and construction sequence

[0043] According to the actual geological situation and engineering layout, the working face is arranged into 5 warehouses: advancing from west to east, the slope roadway 1 is arranged at an angle of 23° to 25° along the false surface.

[0044] Construction sequence: follow the trend from top to bottom, mining from west to east along the trend, mining 2# bins first, and then connecting with bins 3#, 4#, 5#, and 1# to form multi-bin mining.

[0045] (2) Coal mining method and coal mining process

[0046] ① Coal mining method: According to the coal seam occurrence conditions and the actual exposed coal seam conditions, the flexible cover support coal mining method is adopted. The specific steps and parameters are as follows:

[0047] The height of the sill is not...

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Abstract

The invention discloses a goaf waste rock filling coal mining method of a flexible shield support in a half-edge coal seam, comprising the following steps: firstly arranging an alley way before coal mining, wherein the inclined alley way is arranged along a pitching surface according to an angle of 23-25 degrees, mining along the inclined direction from top to bottom and along the trending from east to west; secondly using a flexible shield support for coal mining with coal mining method, using the flexible shield support on a mining surface, tightening among the flexible shield supports by using back boards, using a steel rope to connect into an integral flexible shield support, and separating the goaf waste rock and coal mining space; and finally carrying out goaf waste rock filling. Through the method, safe production of half-edge coal seam can be realized, and simultaneously the handling problem of waste rock produced in underground coal mine can be solved.

Description

technical field [0001] The invention relates to a coal mining method, in particular to a gangue filling coal mining method of a steeply inclined coal seam flexible cover support goaf. Background technique [0002] When mining steeply inclined coal seam groups, because the inclination angle of the coal seam exceeds the rock movement angle of the roof and floor, after the coal seam is mined, the roof and floor of the coal seam may move and collapse, and the mining of the upper and lower coal seams will have a greater mutual influence and damage The integrity of the roof and floor of unmined coal seams is not conducive to the mining of adjacent coal seams. In the working mining layer, the supporting strength of the top frame in the well is not strong, which is related to the softness of the steeply inclined coal seam, so the strength and support of the top frame must be strengthened. If the support is not timely or the support measures are not strong, it will cause cracks or ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16E21F15/00
Inventor 耿养谋张伟马植胜相啸宇于福国周彦军孙春歧王忠武蔡来生王新华景源袁正俊王雷高立增赵兵李万清李忠学崔涛
Owner BEIJING HAOHUA ENERGY RESOURCE
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