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Fully-mechanized top-coal caving face initial-mining-stage goaf fire prevention and extinguishment method

A technology for fully mechanized caving face and goaf, which is applied in the directions of fire prevention, dust prevention, mining equipment, etc., can solve the problems of slow advancement of the working face of the safety system, increase the hidden danger of spontaneous combustion and ignition in the goaf, etc., and achieve equipment installation. Convenience, prevention of spontaneous ignition, slow advancement

Inactive Publication Date: 2012-10-31
DATONG COAL MINE GRP
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Problems solved by technology

Especially during the initial mining of the working face, due to various reasons such as running-in of equipment and unstable operation of the safety system, the advancing speed of the working face is slow, which greatly increases the risk of spontaneous combustion and fire in the goaf during the initial mining

Method used

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  • Fully-mechanized top-coal caving face initial-mining-stage goaf fire prevention and extinguishment method
  • Fully-mechanized top-coal caving face initial-mining-stage goaf fire prevention and extinguishment method
  • Fully-mechanized top-coal caving face initial-mining-stage goaf fire prevention and extinguishment method

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Embodiment Construction

[0018] A method for preventing and extinguishing fire in the goaf of the fully mechanized caving face in the initial mining period described in the present invention is to first determine the areas prone to spontaneous combustion in the goaf of the fully mechanized caving face, and then adopt fire prevention measures,

[0019] The area prone to spontaneous combustion in the goaf of the fully mechanized caving face is determined by the division method of three horizontal zones and three vertical zones. area; in the vertical direction, the junction of the middle and lower caving layers is an area prone to spontaneous combustion;

[0020] The anti-fire measures adopted are steam mist resistance spray and target pouring;

[0021] The steam mist resistance spray is to spray the resistance agent from the end of the working face. The resistance agent enters the goaf with the wind flow and covers the surface of the floating coal. The resistance agent is mainly composed of magnesium ch...

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Abstract

The invention relates to the technical field of coal mine safety and aims to avoid spontaneous combustion caused by goaf float coal floating and heating of the caving face in the initial mining stage. The invention discloses a fully-mechanized top-coal caving face initial-mining-stage goaf fire prevention and extinguishment method which comprises the following steps: determining areas which can easily produce spontaneous combustion in the fully-mechanized top-coal caving face goaf, and taking measures for fire prevention and extinguishment, wherein the areas which can easily produce spontaneous combustion are determined by a horizontal three-zone and vertical three-zone division method, and the measures for fire prevention and extinguishment are mist obstruction spraying and target filling. The invention has obvious effect on goaf spontaneous combustion caused by goaf crushed medium oxidation and heating in the fully-mechanized top-coal caving face mixing stage, especially the caving face initial mining stage with low movement velocity. The method is simple to operate, and the equipment is convenient to install; and thus, the invention can effective prevent and extinguish goaf natural inflammation along with the movement of the caving face.

Description

technical field [0001] The invention relates to the technical field of coal mine safety, in particular to a method for preventing and extinguishing fires in goafs of fully mechanized caving working faces. Background technique [0002] The comprehensive mechanized coal mining process of fully mechanized low-level top coal caving is used in the mining face, and there will be a large amount of residual coal in the goaf, which may cause spontaneous combustion and fire hazards of the residual coal. Once a fire occurs within the plane, it will affect the safe production of the entire mine. [0003] If the mine coal seam is prone to spontaneous combustion, under sufficient conditions, the broken coal body can spontaneously ignite in a very short period of time. Especially during the initial mining period of the working face, due to various reasons such as running-in of equipment and unstable operation of the safety system, the advancing speed of the working face is slow, which gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/00
Inventor 于斌丁大同孟凡龙赵君
Owner DATONG COAL MINE GRP
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