含水采空区全空间瞬变电磁响应分析
陈健强, 李雁川, 田浩, 李汉超

Whole-space transient electromagnetic detection of water-bearing goaf
CHEN Jian-Qiang, LI Yan-Chuan, TIAN Hao, LI Han-Chao
图8 钻孔窥视成果
Fig.8 Drilling peep results