Environmentally sustainable groundwater control during dewatering with barriers:A case study in Shanghai  

作　　者：Zhi-Fei Xie Shui-Long Shen Arul Arulrajah Suksun Horpibulsuk 

机构地区：[1]Department of Civil Engineering,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]Department of Civil and Environmental Engineering,Shantou University,Shantou,China [3]Key Laboratory of Intelligent Manufacturing Technology(Shantou University),Ministry of Education,Shantou,Guangdong 515063,China [4]Department of Civil and Construction Engineering,Swinburne University of Technology,Victoria 3122,Australia [5]School of Civil Engineering,and Center of Excellence in Innovation for Sustainable Infrastructure Development,Suranaree University of Technology,Nakhon Ratchasima 30000,Thailand

出　　处：《Underground Space》2021年第1期12-23,共12页地下空间（英文）

基　　金：This research was funded by the Innovative Research Funding of the Science and Technology Commission of Shanghai Municipality(Grant No.18DZ1201102).This financial support is greatly appreciated.

摘　　要：This paper presents a case study on groundwater control and environmental protection during a deep excavation of the foundation pit for the Liyang Road Station of Metro Line 10 in Shanghai.A three-dimensional finite element simulation model was constructed to quantify the effects of a dewatering process on the environment around the excavation pit.To understand the decrease in the groundwater level around the foundation pit,the ground settlement and groundwater level were studied.During the excavation,environmental protection methods were used in the design of the optimal watering system to check its detrimental environmental effects.The effects of the diaphragm wall and horizontal barrier system were analyzed by varying their insertion depths and the resulting changes in the ground settlement and groundwater level were studied.It was found that increasing the insertion depth of the diaphragm wall reduced settlement near the excavation site but increased the construction costs.The diaphragm wall used in combination with a horizontal barrier was found to be effective in arresting the decrease in groundwater level and reducing settlement around the excavation site.

关 键 词：DEWATERING Horizontal barrier Diaphragm wall Ground settlement DRAWDOWN Confined water 

分 类 号：TU992[建筑科学—市政工程]