Numerical simulation of pumping well-underground concrete wall-recharging well in dewatering of deep foundation pit

摘要

With the foundation pit of south air shaft nearby Qiantang River, Subway No.1, Hangzhou, Zhejiang province as an example, the interaction between pumping wells and underground concrete wall, together with the soft curtain formed by recharging wells are simulated with numerical method. The results indicate that the proper position of filter tube of pumping well to underground concrete wall can reduce the drawdownoutside pit, and the drawdown outside pit can be reduced by recharging curtain.