【摘要】 运用地下水渗流理论,以上海地铁10号线南京东路地铁站基坑降水工程为研究对象,采用地下水数值模拟软件GMS对基坑降水三维非稳定渗流场进行数值模拟与计算。根据基坑北端头井的抽水试验资料,反求第⑦承压水主要水文地质参数,以此为依据对基坑降水过程进行数值模拟。计算结果表明,现有的地下连续墙深度及降压井布局能较好地满足基坑降水设计要求和施工安全。更多还原

【Abstract】 The foundation pit dewatering engineering of east Nanjing road subway of Shanghai metro line No.10 is taken as the research object using groundwater seepage theory.The numerical simulation software GMS of groundwater is utilized to simulate and calculate the 3-D transient seepage in deep foundation pit′s dewatering.The main hydrogeological parameters of the confined aquifer ⑦ are solved through inverse modeling according to the pumping test data in the northern part of the foundation pit.The dewatering processes of foundation pit are simulated and discussed based on the inversed hydrogeological parameters.The calculated results show that the depth of the existing underground continuous diaphram and the layout of dewatering wells can meet the requirements of foundation pit dewatering and construction safety.更多还原