深基坑施工高承压水降压方案数值分析

针对杭州某地铁车站深基坑工程原承压水设计存在的问题，为减小施工风险，采用三维数值模拟与现场抽水试验相结合方法，提出适合本工程地层特性的承压水降压方案。研究表明：三维数值模型计算所得数据与现场抽水试验数据较吻合，利用抽水试验及结果，反演现场水文参数，再经过数值模拟所设计的承压水层降水方案是可行的。

Numerical Analysis of Options to Lower Pressure of High-Pressured Water for Deep Foundation Pit Construction

Focusing on some problems in the original design for pressurized water of the deep foundation pit work in a metro station construction in Hangzhou, in order to reduce construction risk, three- dimensional numerical simulation and field pumping test are conducted. A solution is proposed for this project to lower pressure of the confined water by taking into consideration of the formation properties. The study shows that the three-dimensional numerical model agree well with the field pumping test data, the replay of the site hydrological parameters from the pumping test, the confined water layer decompression solution based on calculated data and numerical simulation is feasible.