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Coal mine goaf management method

A technology for gobs and coal mines, applied in mine/tunnel ventilation, mining equipment, earthwork drilling, etc., can solve problems such as high gas concentration, flammability and explosion, etc., to ensure the amount of recovered coal and increase economic benefits , to avoid the effect of natural fire or gas explosion

Active Publication Date: 2019-04-05
DATONG COAL MINE GRP
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of inflammability and explosion caused by excessive gas concentration in goafs of coal mines, and to provide a treatment method for goafs of coal mines

Method used

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Embodiment Construction

[0009] In order to illustrate the embodiment of the present invention or the technical solution in the prior art more clearly, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0010] A treatment method for gobs in coal mines, comprising the following steps:

[0011] First of all, preventive fire extinguishing treatment is carried out in the goaf: during the recovery period of the fully mechanized mining face of this coal seam, an aerosol resistance fire prevention system is installed, spraying inhibitors to the goaf, and setting Temperature sensor; if there are air leakage passages or ground cracks in the goaf, fi...

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Abstract

The invention belongs to the field of coal mine gas treatment and particularly relates to a coal mine goaf management method. The coal mine goaf management method aims at solving the problem that high-concentration gas in a coal mine goaf is prone to flowing to a coal mining working face. The method comprises performing preventive firefighting treatment on the coal mine goaf, and then performing gas drainage on a coal mine overlaying goaf, a coal seam goaf and worked-out goafs neighboring to a coal seam. The coal mine goaf management method can to the maximum degree prevent gas stored in the closed space of the coal seam goaf and the overlaying goaf from flowing onto the working surface or roadways to avoid accidents such as spontaneous combustion or gas explosion. The coal mine goaf management method can effectively reduce gas overflow during mining to reduce gas accidents, thereby being a preventive measure ensuring safe mine production, achieving goaf managing effects, solving the problem of excessive gas on the working surface, ensuring coal recovery capacity and increasing the economic benefits.

Description

technical field [0001] The invention belongs to the field of coal mine gas control, in particular to a control method for goafs in coal mines. Background technique [0002] In coal mines, the coal mining method usually adopted is single-strike longwall retreat mining, and the whole caving method manages the roof. In recent years, with the increase of production intensity and mining depth, the overlying layers of some coal seams have become goafs. In addition, some coal seams will be mined out of order by surrounding small kilns, resulting in complicated connection relations of goafs. . The mine ventilation method is extraction ventilation, and the gas accumulated in the fully mechanized mining face and the goaf will flow into the coal mining face or roadway. Excessive gas concentration will cause major safety accidents such as gas explosions. The coal seams currently being mined are all coal seams that are prone to spontaneous combustion. With the continuous increase of t...

Claims

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Application Information

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IPC IPC(8): E21F7/00E21F1/00E21F5/00
CPCE21F1/006E21F5/00E21F7/00
Inventor 郭金刚张效春苗勇张帅师旭栗鹏刚
Owner DATONG COAL MINE GRP
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