Physical Sciences and Mathematics Commons^™

The Application Of Opposing Coils Transient Electromagnetics In The Detection Of Karst Subsidence Area, Xie Jia, Liu Yang, Li Xingqiang, Lu Yulong, Li Ganlong

Coal Geology & Exploration

Ground collapse caused by karst is both disastrous and covert. In order to forecast and control it effectively, a research area with strong karst collapse development was selected in this study, and a method that combines Opposing Coils Transient Electromagnetics with engineering geological drilling was used to verify the formation occurrence through the factors including buried depth of overburden, resistivity and isoline variation. The results of geophysical inversion maps and borehole information verification show that the Opposing Coils Transient Electromagnetics method can effectively identify the development of underground corrosion. Especially in the area where the conventional geophysical exploration methods may …