Numerical Simulation of Land Subsidence Caused by Both Dewatering and Recharging

Abstract

The groundwater recharge was conducted to prevent land subsidence in many major cities such as Beijing, Shanghai and Tianjin in China. Specifically, the use of recharging to prevent ground subsidence in foundation pit projects has become a popular technique. In this paper, the numerical simulation was used to study the influence of the distance between the recharging well and the dewatering well on the land subsidence. The results show that the appropriate distance between the recharging well and the dewatering one is favorable to prevent subsidence.