土木与环境工程学报（中英文）2024，Vol.46Issue(4)：82-90,9.DOI:10.11835/j.issn.2096-6717.2022.045
深厚强透水含水层地铁深基坑地下水控制方案综合比选方法
Comprehensive comparison of various scenarios to groundwater control for a deep metro excavation in highly-permeable aquifers
摘要
Abstract
For comparison and selection of groundwater control scenarios for subway deep foundation pits in deep and high permeable aquifers,this paper presents the qualitative and quantitative comparison and selection framework by using analytic hierarchy process,fuzzy comprehensive evaluation and numerical calculation methods.Comprehensive comparison of various scenarios to groundwater control for a deep metro excavation in highly-permeable aquifers is established.Taking Shuibu metro station in Fuzhou as an example,five different groundwater control scenarios(i.e.open dewatering,fully penetrating curtains,deep horizontal bottom sealing curtain,partially penetrating curtains with dewatering,underwater excavation)are evaluated and analyzed using the proposed method.The results show that the scenario of both partially penetrating curtains and dewatering is the best for groundwater control.Then,the numerical simulation is used to analyze the surrounding surface settlement caused by dewatering.The results show that the surface settlement is in the range of 12-23 mm,which shows that the partially penetrating curtains with 42 m length can effectively control the surface settlement caused by dewatering.This method provides a solution for comparison and design of groundwater control scenarios for subway foundation pits in deep and high permeable aquifers.关键词
深基坑/地铁/强透水含水层/地下水控制/方案比选Key words
deep excavation/metro/high permeable aquifers/groundwater control/comparison and selection of scenarios分类
建筑与水利引用本文复制引用
曹成勇,彭远胜..深厚强透水含水层地铁深基坑地下水控制方案综合比选方法[J].土木与环境工程学报（中英文）,2024,46(4):82-90,9.基金项目
国家自然科学基金(51938008) （51938008）
中国博士后科学基金(2021T140474) National Natural Science Foundation of China(No.51938008) （2021T140474）
China Postdoctoral Science Foundation(No.2021T140474) （No.2021T140474）
