Collapse of ground surface occurs frequently at Yangxi village in Fengcheng and causes great economical loss.Herein

the geological conditions of this area were investigated and distribution pattern of the collapse was analyzed. The data demonstrates that two leading factors are responsible for the ground collapse of this region: decrease of the water level of Ganjiang River and drastic fluctuation of underground water level caused by excessive industrial water usage. Groundwater drainage through quarry pit drain line also can directly lead to ground collapse. Collectively

these results offer guidelines to prevent and predict the ground collapse in this particular region.