Datong Coal Mine Group Corporation Limited

针对大同矿区侏罗系煤层群开采的冲击地压危害,总结该开采条件下冲击地压发生情况,分析了大同矿区冲击地压发生的特点和主要影响因素,并提出了相应的综合防治技术。其主要特点为埋深浅、具有区域连续性、与开采引起的支承压力关联度大等,而影响其发生的主要因素是矿区特有的煤层与顶底板坚硬、地质构造及开采附加应力。在此基础上提出的冲击地压逐级预测预报方法和优化巷道布置、煤岩层的改性弱化、加强支护等冲击地压综合防治技术,通过现场实施,效果明显。

According to the mine strata pressure bumping damages occurred from the mining in Jurassic System seams group in Datong Mining Area in the passed several years, based on the summarization on the mine strata pressure bumping occurred conditions under the mining conditions, the features and major influence fact ors of the mine strata pressure bumping occurred in the Datong Mining Area were analyzed in detail and the related comprehensive prevention and control technology was provided.The main features would be the shallow mining depth, regional continuity, high correlation degree of the support pressure occurred in the coal mining. The main influence factors would be the special hard seam, hard roof and hard floor of the mining area, geological structure and mining additional stress.Based on the circu mstances, a steady prediction and early warning method of the mine strata pressure bumping, a optimized mine roadway layout, modified weakening of the seam and ro ck strata, enhanced support and other mine strata pressure prevention and control technology were provided.With the site applications of the prevention and control tec hnology, the effect was remarkable.

国家重点基础研究发展计划(973计划)资助项目(2010CB226800)；