关键词: 承压含水层, 悬挂式止水帷幕, 三维渗流场, 控制因素

Abstract: To study the deep excavation with suspended impervious curtain for the groundwater control, a typical Shanghai confined water hydrogeological conditions with deep excavation is presented in this paper. Through a finite element software simulation analysis of the deep excavation in the process of precipitation, the filter tube length, the winding length and the excavation depth are evaluated inside and outside the excavated water level changes. The results show that increasing the winding path within a certain range can reduce the water level outside the excavated area; the “shallow well covering” reduces the length of the curtain during the winding length from 4-13 m. This study can provide a basis for the construction of related projects. It also provides a reference for the construction of related projects.

Key words: Confined Aquifer, Suspended Impervious Curtain, Three-Dimensional Seepage Field, Controlling Factor