上海地铁四号线董家渡修复段基坑降水实录  

Dewatering of the Dongjiadu tunnel restoration on Shanghai metro line 4

作　　者：瞿成松[1,2,3] 

机构地区：[1]北京师范大学水科学研究院,北京100875 [2]地下水污染控制与修复教育部工程研究中心,北京100875 [3]上海长凯岩土工程有限公司,上海200002

出　　处：《岩土工程学报》2010年第S2期339-342,共4页Chinese Journal of Geotechnical Engineering

基　　金：上海市科学技术委员会资助项目(08201201400);上海市科学技术委员会资助项目(09dz1207900)

摘　　要：根据基坑开挖工况、地质条件和环境要求和抽水试验制定坑内降水方案,对上海地铁四号线董家渡段地层塌陷隧道进行原位修复降水。采用承压含水层降水三维渗流与土体变形控制耦合数值模型进行数值模拟,模型参数由现场抽水试验确定,模拟结果与施工中实际数值吻合较好。采用降水综合控制信息图反映水位、沉降、开挖深度及流量历时变化,有效地保护了基坑临近建筑物。According to the excavation stages,pumping test,geological and environmental conditions,dewatering program in deep foundation pit of Dongjiadu section in Shanghai Metro Line No.4 is made,which is the in situ restoration of subsided tunnel in disturbed layers.The full coupling numerical simulation model between the three dimensional dewatering seepage and soil deformation control is carried.The model parameters are obtained by the pumping test,and the numerical results agree well with the monitoring data.The control system of waterlevel,subsidence,evacation depth and flow are shown in the dewatering informatiom map,which can reflect the real-time information and protect the nearby building effectively.

关 键 词：修复段基坑降水 降水综合信息图 降水试验 降水引起的建筑保护 土体变形控制 

分 类 号：TU463[建筑科学—结构工程] U455.49[建筑科学—土工工程]