悬挂式止水帷幕下基坑承压水降水方式探讨

Discussion on Dewatering Method of Confined Water in Foundation Pit under Suspended Waterproof Curtain

本文以悬挂式帷幕下不同的承压水降水方式为例,分析了在综合考虑止水帷幕进入承压含水层深度、周边环境要求、基坑规模、降压幅度等多重因素下,采取坑外抽+坑内观测(备用)、坑内抽及坑内坑外观测(备用)、坑内抽及坑内观测(备用)等多种承压水控制处理方式,并通过案例对以上承压水控制处理方式加以说明,可为类似工程承压水设计提供参考。

Taking different confined water dewatering methods under suspended waterproof curtain as examples, this paper analyzes that in comprehensive consideration of multiple factors such as the depth of the water-proof curtain into the confined aquifer, surrounding environmental requirements, the size of the foundation pit, and the magnitude of the pressure drop, multiple confined water control treatment methods such as pumping outside the pit + observation inside the pit(backup), pumping inside the pit and observation outside the pit(backup), pumping inside the pit and observation inside the pit(backup) are adopted. And the above-mentioned confined water control and treatment methods are explained with cases, which can provide reference for similar projects.