上海第九层承压水减压控制措施

Dewatering measures for deep foundation pit with confined water in the 9th stratum

承压水减压控制技术一直是基坑工程的重点和难点问题,随着基坑工程的发展,一些上海市的超深基坑工程甚至面临第九层承压水的减压控制问题,结合上海市轨道交通中间风井基坑工程的施工案例,着重介绍上海第九层承压水的减压控制措施和相应的设计方法,希望能为相关工程提供参考。

Dewatering has always been an important and challenging problem for foundation pit projects. With the development of foundation pit engineering,some of the deep foundation pits in Shanghai even have to face the problems of confined water deeply seated in the 9 th stratum below the surface. Based on the practice of the foundation pit of a ventilation shaft project,will focus on dewatering measures and the corresponding design approaches for confined water deeply seated in the 9 th stratum below Shanghai,which will provide insights for this kind of projects.