对承压水层泵房施工的风险及变形规律分析

Analysis on Risk and Deformation Law of Constructing the Pumping Stations in Confined Water Layer

本文以北京地区某位于承压水层的盾构区间废水泵房施工为例,计算了承压水出现突涌的可能性,分析了承压水突涌的主要原因,对承压水突涌后泵房所在联络通道拱顶沉降规律、侧墙收敛规律及泵房上方地表沉降规律进行了简要分析,并根据本次施工经验总结了位于承压水层泵房施工过程中控制承压水突涌的关键工序。

This paper takes the construction of a wastewater pumping station located in confined water layer of shield zone in Beijing for example,calculates the possibility of the confined water inrushing and analyzes the principal reasons of the confined water inrushing and the rules of crown settlement of contact channel,sidewall convergence and surface subsidence after the confined water inrushing.According to the experience of this construction,this paper summarizes the key processes of controlling the confined water inrushing in the course of constructing the wastewater pumping stations.