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1 采空区探测方法一览[23]
Fig.1 The list of gob area detection method