等值反磁通瞬变电磁法在公路隧道塌陷区的探测应用

刘杰, 段炜, 王俊, 刘成, 戴国强

The application of opposing coils transient electromagnetic method to the detection of underground collapse in highway tunnel under construction

LIU Jie, DUAN Wei, WANG Jun, LIU Cheng, DAI Guo-Qiang

图4 OCTEM感应电压剖面(a)及反演电阻率断面解释成果(b)

Fig.4 Induced voltage profile (a) and resistivity section (b) of OCTEM