Gas explosion suppression system and method for coal mine

Abstract

A gas explosion suppression system and method for a coal mine. The system comprises a gas detection module (1) for detecting concentrations of methane and oxygen at an upper corner (10) of a coal mining working surface and an intrinsic safety type anti-explosion control valve (2) electrically connected to the gas detection module. The intrinsic safety type anti-explosion control valve is electrically connected to an inert gas releasing device (12) which is used for releasing inert gases to the upper corner of the coal mining working surface so as to dilute the concentrations of oxygen and methane, and is electrically connected to a wind shielding device I (6) which is used for preventing oxygen in an air way from entering the upper corner of the coal mining working surface. The explosion suppression method comprises: Step 1, detection of concentrations of methane and oxygen; Step 2, judgment of the concentrations of methane and oxygen; Step 3, dilution of methane and oxygen; and Step 4, discharge of the diluted methane and oxygen. The devices of the present invention have high working reliability, the underground gas explosion suppression purpose is realized, and the coal mining safety is improved.

Description

technical field [0001] The invention relates to an explosion suppression system and an explosion suppression method, in particular to a gas explosion suppression system and an explosion suppression method for coal mines. Background technique [0002] my country is the world's largest coal-producing country, and coal accounts for about 70% of my country's primary energy consumption. Therefore, the coal industry is an important basic industry related to the lifeline of my country's national economy. However, the coal industry is one of the industries with the most serious safety production situation in my country. Preventing and controlling the occurrence of major accidents in coal mines and promoting the fundamental improvement of the safety production situation in coal mines have become major issues that need to be solved urgently at the national and government levels. The core task of safety production work. Among all coal mine disasters and accidents, gas accidents are the...

AI Technical Summary

Problems solved by technology

Gas disasters have become the most important factor restricting the development of efficient and intensive mining technology and safe production. Conventional or single gas disaster prevention technology can no longer meet the needs of efficient and safe production in coal mines

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