复杂环境下高水位深基坑支护渗漏止水施工技术

Complex environment and high water level supporting technology for deep foundation

某工程项目地处福州闽江北江滨,地下水位高且受闽江水位涨落影响变化极大,因此如何止水成为基坑支护的关键,本文从支护桩的选型进行分析,确定采用冲孔咬合桩加钢筋混凝土内支撑体系,冲孔咬合桩在该体系中既承担围护作用又起到止水作用。同时针对开挖过程中出现的渗漏进行原因分析并采取相应的止水措施。

A project is located in North Riverside of Fuzhou,it is high water level and the water level changes greatly affected by the fluctuation of Min River,So how to stop water is the key to Foundation supporting.This paper analysises how to select the type of retaining pile,finaly selects the punching bite pile and reinforced concrete interior support system.Punching bite pile in the system is liable for supporting and can stop the water.Through analysis of the reasons for the leakage occured during excavation we take water stopping measures.