ABSTRACT
Karst collapse is one of the geological disasters of the more serious dangers, prediction of Karst collapse is a widely recognized conundrum. This study is based on Terzaghi consolidation theory and GMS software to establish a hydrodynamic - mechanics coupling model. The hydrogeological conditions in Fenghua village, Qingling township, Wuhan, were used as the background for establishing the hydrodynamic – mechanical coupling model. Simulation analyzed the cave collapse at the soil-rock junction in Karst collapse area in Wuhan city Qingling town Fenghuo village. The variation value of earth pressure, displacement value of soil, and soil damage are closely related to the groundwater flow field. During periods of high water, the pressure value of the soil is relatively small, but the displacement of the soil is relatively large. When the groundwater level drops, the soil produces the largest damage area.
