Numerical simulation analysis of dewatering and recharge process of deep foundation pits

Part of the ultra-deep foundation pits have debunked confined aquifer in Wuhan area, and thegroundwater is bound to affect the excavation. So the groundwater should be effectively controlled. Taking the dewatering of deep foundation pit of Integrated Services Building of Wuhan Women and Children Health Care Center as an example the dewatering and recharge process are simulated by using Visual Modflow. The feasibility and accuracy of simulations are analyzed, and the effcienly of different recharge methods and the impact of recharge on changes in water level and ground settlement outside the deep foundation pit are studied. The results show that the recharge plays a significant role in improving water outside the deep foundation pit, and the greater the amount of recharge, the more the water level recovery. The settlement outside the deep foundation pit can be reduced by recharge, and the more the recharge amount, the more the controlled settlement.