论文部分内容阅读
采煤工作面冒顶是直接威胁矿工生命安全的重大灾害之一。近几年来鹤壁六矿虽然采取一系列预防冒顶措施,加强采后灌浆,但是,仍免不了吃苦头。据统计,1985年冒顶28次,其中采煤工作面 26次,掘进工作面 2次。为此,有必要探讨采后灌浆,促使金属网假顶锈结,提高管理质量,促进安全生产。 一、概况 鹤壁六矿位于鹤壁煤田偏南部,走向5.5公里,倾斜3.5公里,矿井地质储量丰富,可采煤层一层(大煤),平均厚8米,倾角13～30°,煤层具有自然发火性,发火期为3～6个月。年核定产量75万吨。现采煤方法为走向长壁,倾斜分层,金属网假顶,全部垮落,水力运输采煤法。
Coal mining face roof is one of the major disasters that directly threaten the life and safety of miners. In recent years, Hebi No.66, though adopting a series of measures to prevent roof fall and intensify post-harvest grouting, still can not endure hardships. According to statistics, in 1985, the roof fell 28 times, of which 26 coal mining face, driving face 2 times. To this end, it is necessary to explore post-harvest grouting, to promote metal mesh false top rust knot, improve management quality and promote safe production. I. Overview Hebi VI is located south of Hebi coalfield, to 5.5 kilometers, 3.5 kilometers inclined, mine geological reserves are abundant, the coal seam can be a layer (large coal), an average of 8 meters thick, the angle of 13 to 30 °, the coal seam with natural Ignitability, the period of fire is 3 to 6 months. The annual output of 750,000 tons approved. Coal mining method is to go to the long wall, inclined stratification, metal mesh roof, all collapse, hydraulic mining mining method.