Electrical resistivity tomography with combined arrays for shallow karst collapse hazard identification in Fuchuan, Guangxi, China
Yingchun Tang
Shallow covered karst collapse is a prevalent geological hazard in Fuchuan County, Guangxi, China, posing severe threats to local engineering construction and human safety. To accurately identify subsurface karst structures and delineate collapse hazard zones, high-density electrical resistivity tomography (ERT) with Wenner, Schlumberger, and their combined array configurations was applied in a typical shallow karst hazard zone of Fuchuan. Field data were acquired with a 5 m electrode spacing fo