Coal bed blind alley enclosing wall and blind alley anti-explosion method using same

Abstract

The invention provides a coal bed blind alley enclosing wall and a blind alley anti-explosion method using the same. The coal bed blind alley enclosing wall comprises a wall body and an inlaying part arranged on the periphery of the wall body, wherein the wall body is inlaid in the wall of a blind alley through the inlaying part; the wall body is perpendicular to the extension direction of the blind alley; the wall body is provided with a gas extraction tube which is perpendicular to the direction of the wall body, an inert gas injection tube, an observation tube and a water draining tube; and valves are respectively arranged on the gas extraction tube, the inert gas injection tube, the observation tube and the water draining tube. By the coal bed blind alley enclosing wall and the blind alley anti-explosion method using the same, accident potentials of self-combustion fire of coal and gas explosion in the blind alley can be eliminated.

Description

technical field [0001] The invention relates to fire prevention and explosion-proof technology for coal seam blind alleys, in particular to a coal seam blind alley closed wall and a blind alley explosion-proof method using the closed wall. Background technique [0002] Coal seam blind alley refers to a roadway with only one channel and no ventilation. After the excavation work of the underground coal seam blind alley is closed for some reason, high concentration of gas will accumulate in the blind alley, and there will be accident hazards such as coal spontaneous combustion or gas explosion. When re-opening, the gas in the blind alley needs to be discharged first. There are many ways to discharge, but no matter which method is used, once sparks are generated during the discharge process, serious accidents will occur. Contents of the invention [0003] The invention provides a coal seam blind alley closed wall and a blind alley explosion-proof method using the closed alley...

AI Technical Summary

Problems solved by technology

After the excavation work of the blind alley in the underground coal seam is closed for some reason, high concentration of gas will accumulate in the blind alley, and there will be accident hazards such as coal spontaneous combustion or gas explosion

When re-opening, the gas in the blind alley needs to be discharged first. There are many ways to discharge, but no matter which method is used, once sparks are generated during the discharge process, serious accidents will occur

Images