Method for ventilation-assisting roadway arrangement and surrounding rock stability control in later period of coal mining

Abstract

The invention discloses a method for ventilation-assisting roadway arrangement and surrounding rock stabilizing control in the later period of coal mining, belonging to a method for mine ventilating system optimization and roadway arrangement. The method comprises the steps of (1) determining and arranging section coal pillars of roadways for assisting ventilation namely air inlet or air return; (2) analyzing the stability of the section coal pillars; (3) optimizing roadway arrangement schemes in the section coal pillars; (4) determining a technical scheme for reasonable roadway supporting. Aiming at the problems that in the later period of coal mining, a ventilating line is long, ventilation resistance is great, and air loss is great, the method is characterized in that the ventilation-assisting roadways are arranged in the section coal pillars in a left area of a gob, so as to shorten the length of the mine ventilating line length and reduce air loss, and has the advantages of greatly shortening the ventilating line length and reducing air loss by arranging the ventilation roadways in the section coal pillars in the left area of the gob, meanwhile improving a resource extraction rate and increasing the economic benefit of an enterprise by more extracted coal in roadway construction, meeting the need of safe mine production, and achieving obvious technical and economic benefits.

Description

technical field [0001] The invention relates to a mine ventilation system optimization and roadway layout method, in particular to an auxiliary ventilation roadway layout and surrounding rock stability control method in the later stage of coal mining. Background technique [0002] In the later stage of coal mine production, there are usually problems such as complex mine ventilation system, long ventilation lines, increased ventilation resistance, and large air volume loss. Especially for deep high-ground temperature and high-gas mines, low ventilation efficiency and insufficient air volume can easily lead to poor working conditions for underground workers. It will deteriorate and easily cause accidents such as gas explosions, which is not conducive to the realization of mine safety and efficient production. Therefore, optimizing the mine ventilation system has become one of the problems to be solved urgently in the late stage of coal mining. On the other hand, for a long t...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an auxiliary ventilation roadway layout and surrounding rock stability control method in the later stage of coal mine mining to solve the problems of complex ventilation system, long ventilation line, large ventilation resistance and large air volume loss in the late stage of mine mining

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