不排水下沉施工技术在排水泵站沉井工程中的应用

Application of undrained sinking technology in open caisson project of drainage pumping station

不排水下沉是沉井下沉施工过程中常用的一种施工工艺,主要用于地下水位高且大量排水会影响周围结构物安全、存在严重流砂地层和渗水量大的砂砾层时。通过滕州市S241平滕线某排水泵站建设,对不排水下沉沉井施工工艺和技术措施等进行研究论述。

Undrained sinking is a commonly construction technology in open caisson, mainly used for some projects, the safety of surrounding structures affect by high groundwater level and large amounts of drainage, having serious sand flow strata and water seepage gravel layer. Through a drainage pumping station of S241 Pingteng line, undrained sinking construction technology and technical measures are discussed.