Numerical Simulation and Verification of Water Inflow Calculation of Hanging Water-stop Curtain

In the foundation pit project, in order to reasonably protect the groundwater resources and save the project cost, the hanging water-stop curtain is more and more widely used in projects. In order to study the amount of water influx and the influence range of the impact radius of the hanging water-stop curtain pit, the foundation pit project of the First People’s Hospital of Dongcheng District is analyzed. The numerical simulation of the water inflow amount of the hanging water-stop curtain pit is carried out, and monitoring data is acquired to verify the numerical calculation results. The results show that: (1) the amount of water inflow in the foundation pit analyzed by the finite element numerical simulation software is the same as the actual monitored numerical trend, and the daily amount of water inflow could reach 1970 m³; (2) the foundation pit with hanging water-stop curtain is set up, and the original influence radius of foundation pit dewatering is no longer applicable, and the influence radius of dewatering is reduced compared with the original; (3) as the distance from the water-stop curtain increases, the head value outside the foundation pit becomes larger and larger; as the distance from the water-stop curtain increases, the trend of the increasing head value outside the foundation pit is getting smaller and smaller.