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1974年11月22日,奶子山立井五采区150马力绞车房发生了瓦斯爆炸,巷道棚子倒塌,通风设施被摧毁。矿井瓦斯涌出量为12.33m~3/t,定为高瓦斯矿井,煤尘爆炸指数为25.1%,系中央并列式吸出式通风瓦斯爆炸的主要原因:1、绞车入风侧通往总排的风门被打开,造成风流短路;2、绞车房后面是采空区,在围岩和密闭中有大量瓦斯涌出;3、绞车开动电磁铁吸合,相间产生电弧火花。新鲜风流由260马力绞车道进入卡机道,然后进入150马力绞车道(此绞车道用作采
On November 22, 1974, a gas explosion occurred in a 150-horsepower winch house in the five mining areas of Zhoushi Mountain. The shed of the tunnel collapsed and the ventilation facilities were destroyed. Mine gas emission is 12.33m ~ 3 / t, set as high-gas mine, coal dust explosion index was 25.1%, the central parallel type suction ventilation gas explosion main reasons: 1, winch inlet side of the total row Of the wind door is opened, resulting in a short circuit; 2, behind the winch house is the goaf, a large number of gas emission in the surrounding rock and airtight; 3, winch start electromagnet pull, phase spark arcing. Fresh air from the 260 hp driveway into the card machine Road, and then into the 150 horsepower winch Road (this winch for mining