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应用区域地质构造理论和岩士力学数值分析软件,依据郑煤集团超化矿21111下副巷325突出事故点的具体地质构造条件及煤层顶底板赋存参数等,对郑州矿区豫西“三软”煤层的突出原因进行了分析,发现低角度滑动构造形成的构造软分层及采掘活动的应力重新分布是导致豫西“三软”煤层突出的主要原因。采取区域超前探测措施,分析软分层的具体赋存形态,采取针对性超前卸压排放措施是预防豫西“三软”煤层煤与瓦斯突出事故发生的关键。
According to the geologic tectonics theory and the rock mechanics numerical analysis software, according to the specific geologic conditions and the occurrence parameters of top and bottom of 325 coal mine in 21111 of Zhengmei Group, Soft “coal seam is analyzed. It is found that the structural soft stratification formed by low-angle sliding structure and the stress redistribution of extractive activity are the main reasons leading to the prominent” three soft “coal seam in western Henan. It is the key to prevent coal and gas outburst accidents in the western Henan ”three soft" coal seam by taking the measures of advanced exploration in the region and analyzing the specific forms of soft stratification.