Experimental device and method for quickly closing upper corner to prevent gas leakage

Abstract

The invention discloses an experimental device and method for quickly closing an upper corner to prevent gas leakage. The experimental device comprises an air bag, an inflation system, a gas concentration detection system and a hydraulic support stabilizing system; the inflation system comprises a high-pressure gas cylinder, a gas delivery main pipe and three gas delivery branch pipes; an outlet of the high-pressure gas cylinder is connected with an on-off valve; the gas delivery main pipe is provided with a manometer, a control valve and a pressure gauge; the gas delivery branch pipes are each connected with a pressure reducing valve, an inflation guide pipe and an inflation connector; and the gas concentration detection system comprises a first light interference gas concentration detector and a second light interference gas concentration detector. The experimental method comprises the following steps of first, manufacturing an air bag, second, detecting the air tightness of the airbag, third, establishing the experimental device for quickly closing the upper corner to prevent the gas leakage and inflating, fourth, performing experimental testing, and fifth, ending an experiment. The air bag can be quickly filled to form a barrier in an emergency, and the upper corner can be quickly closed to prevent the gas leakage, so that the experimental device and the experimental method are high in practicability and convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of gas disaster control, and in particular relates to an experimental device and method for quickly sealing an upper corner to prevent gas leakage. Background technique [0002] In recent years, with the increase of coal seam mining depth, the concentration of gas accumulation in the upper corner is getting higher and higher. In order to prevent the gas leakage in the upper corner from causing explosion damage, it is necessary to design a device to prevent gas leakage in the upper corner. At present, there are many control measures to prevent gas leakage in the upper corner at home and abroad, such as: gas drainage in the upper corner, installation of air curtains in the upper corner, installation of wind guide facilities in the upper corner, and blowing with local fans. And these existing measures can only prevent part of the gas leakage, there will still be some gas leakage in the roadway in the upper corn...

AI Technical Summary

Problems solved by technology

However, these existing measures can only prevent part of the gas leakage, and there will still be some gas leakage in the upper corner of the roadway, which is likely to cause an explosion and these measures cannot prevent gas leakage quickly and efficiently.

Moreover, the amount of coal mining at home and abroad is increasing, and as the coal seam is mined deeper and the mining volume is greater, the problem of gas leakage is also increasing. The increase in the concentration of gas leakage can easily cause gas disasters. People are paying more and more attention to gas safety issues with the improvement of gas level, but for the sudden and sudden increase of gas concentration, some previous measures seem to be lack of timeliness, rapidity and efficiency

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