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掘进巷道通风是矿井通风工作的重要组成部分,是煤矿安全生产的重要环节之一。据统计,全国煤矿系统发生的沼气爆炸事故中,有30～40%发生在掘进巷道;在我局发生的沼气爆炸事故中,有70%发生在局部通风的井巷中。随着我国煤炭工业的发展,开采水平延深,煤层沼气含量越来越大,高沼气及煤与瓦斯突出的地区越来越多;与此同时,随着大功率局部扇风机的出现及胶质导
Tunneling ventilation is an important part of mine ventilation work and is an important part of coal mine safety production. According to statistics, 30-40% of the methane explosion accidents occurred in the coal mine system occurred in the tunneling of tunnels; 70% of the methane explosion accidents that occurred in our bureau occurred in partially ventilated tunnels. With the development of coal industry in our country, the exploitation level has been deepened, the content of biogas in coal seams has become larger and larger, and the areas with high methane and coal and gas outbursts have become more and more. At the same time, with the emergence of high-power local fans and glue Quality guide