等值反磁通瞬变电磁法在城市地质调查中的应用

何胜, 王万平, 董高峰, 南秀加, 魏丰丰, 白勇勇

Application of the opposing-coils transient electromagnetic method in urban geological surveys

HE Sheng, WANG Wan-Ping, DONG Gao-Feng, NAN Xiu-Jia, WEI Feng-Feng, BAI Yong-Yong

图2 OCTEM 线圈及其径切面一次场磁力线

Fig.2 OCTEM coils and its primary magnetic field line on the diametric plane