【摘要】 阐述了祁东煤矿地质采矿条件的特殊性,介绍了祁东煤矿综采覆岩破坏的实测结果,结合国内其他矿区覆岩破坏的一般规律及特点,对比分析了祁东煤矿综采中硬覆岩破坏的异常特征,指出了祁东煤矿综采覆岩破坏出现异常的主要原因。更多还原

【Abstract】 The authors presented the particularity of geological mining conditions in Qidong Coalmine and introduced experimental results of overburden rock fracture in fully mechanized mining.They also,combining the general rules and features of overburden rock fracture in other domestic coalmines,compared and analyzed abnormal features of medium-hard overburden rock fracture in fully mechanized mining and pointed out main reasons for abnormal overburden rock fracture in fully mechanized mining in Qidong Coalmine.更多还原