Karst collapse is one of the most common geological disasters in limestone area. Once it occurs

it will cause personal injury and property loss

which will seriously affect the project quality and construction progress. Therefore

high density resistivity method and shallow seismic imaging method are widely used in geological disaster investigation and engineering investigation. This paper introduces the high-density resistivity method and the shallow seismic imaging method to analyze and study the karst ground collapse found in the new resettlement site of Shuikou Town in the expansion of centianhe reservoir in Jianghua Yao Autonomous county

Hunan province. The buried depth and distribution range of the underlying rock

karst ditch

karst trough

karst fissure and karst cave are found out. The drilling data confirm that the geophysical exploration can infer the geological information good geological results have been obtained.