Technology for preventing and controlling spontaneous ignition of gas and coal dust by fully closing and withdrawing full-mechanized coal face

A natural ignition, fully enclosed technology, applied in the direction of dust prevention, fire prevention, safety devices, etc., can solve the problems of inability to prevent, inability to prevent air leakage and oxygen supply, deterioration of the working environment, etc., and achieve the effect of preventing dust from flying.

Inactive Publication Date: 2015-06-10
陕西长武亭南煤业有限责任公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, it cannot prevent the gas in the goaf and the gas released by the top coal breaking during the withdrawal process from gushing into the work space where the workers retract the support, let alone prevent the air leakage and oxygen su

Method used

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  • Technology for preventing and controlling spontaneous ignition of gas and coal dust by fully closing and withdrawing full-mechanized coal face
  • Technology for preventing and controlling spontaneous ignition of gas and coal dust by fully closing and withdrawing full-mechanized coal face
  • Technology for preventing and controlling spontaneous ignition of gas and coal dust by fully closing and withdrawing full-mechanized coal face

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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 to Figure 4 ,among them, figure 1 It is a schematic diagram of the state of the stent system in an embodiment of the present invention when it starts to create withdrawal conditions; figure 2 It is a schematic diagram of the state of the support system in the process of creating withdrawal conditions at the coal face in an embodiment of the present invention; image 3 It is a schematic diagram of the stat...

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Abstract

The invention discloses technology for preventing and controlling spontaneous ignition of gas and coal dust by fully closing and withdrawing a full-mechanized coal face. The technology includes: setting up a support system; arranging flame-retardant antistatic cloth; jacking the flame-retardant antistatic cloth to the top of a coal bed and fixing the same relatively to the coal bed with the help of the support system; enabling the flame-retardant antistatic cloth to fall down along with caving of coal at the top of a mined-out area and to be abutted against the rear portion and a baseplate of a support. The flame-retardant antistatic cloth is additionally arranged, and functions of closing the mined-out area, preventing gas in the mined-out area from gushing, stopping fresh air from entering the mined-out area, resisting flame and static electricity and preventing dust from flying can be realized in the process of withdrawing the fully-mechanized coal face, so that the defects of the prior art are overcome. A coal mining system comprises a base, a top beam and a tail beam. The top beam and the tail beam are arranged on the upper side of the base through an upright, and the flame-retardant antistatic cloth is arranged on the upper side of the top beam, can move relatively to the top beam and can be fixed relatively to the coal bed. The technology is used for withdrawing the full-mechanized coal face and is high in safety.

Description

technical field [0001] The invention relates to the technical field of coal mining, and more specifically relates to a fully-closed withdrawn full-mechanized mining face technology for preventing natural ignition of gas and coal dust and a coal mining system. Background technique [0002] Spontaneous ignition, massive gas gushing out of gobs and flying coal dust are the three major problems faced at the same time during the withdrawal of comprehensive mechanized coal mining working faces in spontaneous combustion coal seams and high-gas mines. Usually, adjustment of ventilation system, gas extraction, reduction of coal residue in gobs, enhancement of resistance and inerting of goafs, reduction of air leakage in goafs, strengthening of gas monitoring in goafs, and acceleration of withdrawal speed of working faces are usually made comprehensively. , to prevent spontaneous combustion of coal during the retraction period of the coal mining face, to prevent gas from exceeding the...

Claims

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Application Information

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IPC IPC(8): E21F5/08
CPCE21F5/08
Inventor 郭召顺薄其山尹经梅王洪涛陈足章王吉斋
Owner 陕西长武亭南煤业有限责任公司
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