金属矿山地下采空区问题研究现状与展望
程力,刘焕新,朱明德,吴钦正

Current Situation and Prospect of Research on Underground Goaf in Metal Mines
Li CHENG,Huanxin LIU,Mingde ZHU,Qinzheng WU
图7 崩落法处理采空区示意图
Fig.7 Schematic diagram of treatment of goaf by caving