论文部分内容阅读
在1981年的《煤矿安全》第2期上,淮南谢二矿张希九同志对回采工作面的“重大恶性推垮型”冒顶事故进行了分析,读后很受启发。这里,根据多年实际工作的体会,也对我矿一次采全高的08号煤层回采工作面同类型冒顶事故的发生原因、主要特点及预防措施,提出粗浅看法,供参考。我矿08号煤层,采高1.3米左右,倾角25°至30°,煤质坚硬。直接顶为2米厚的黑色泥岩,结构致密,随回采能及时冒落。老顶为1
At the second phase of “Coal Mine Safety” in 1981, Comrade Zhang Xijiu from Xie 2 Mine in Huainan conducted an analysis of the “major and malignant fallout type” roof fall accident at the mining face and was greatly inspired. Here, based on the experience of many years of practical work, I also put forward some superficial opinions for the reasons, main features and preventive measures of the same-type roof-fall accident on the No. 08 coal seam mining face in our mine. I seam No. 08 coal seam, mining height of 1.3 meters, dip 25 ° to 30 °, hard coal. Directly top to 2 meters thick black mudstone, compact structure, with the mining can take time to fall. The old top is 1