软土地区某深大基坑承压水突涌分析处理  

Analysis and treatment on the inrushing of soil and confined water for certain deep and large foundation pit in soft soil area

作　　者：谢石连 王勇[2] 付奕 丁其峰 

机构地区：[1]上海城市管理学院,上海200438 [2]安徽省地质环境监测总站,安徽蚌埠233000 [3]上海市人民防空工程公司,上海200030

出　　处：《工程勘察》2011年第11期46-49,共4页Geotechnical Investigation & Surveying

摘　　要：基坑的突涌与承压地下水息息相关。软土地区某基坑下部存在承压含水层,经验算基坑底板不稳定易产生突涌现象,采用深井管井降水降压,有效地控制了⑤2层承压地下水,消除了地下水突涌隐患,保证了基坑坑底、周边环境的稳定及基坑开挖工程的正常进行,取得了满意的工程效果。The inrush of soil and water in foundation pit is closely related with the confined groundwater.The confined aquifer exists under certain foundation pit in soft soil area.Through the checking it is indicated that the floor of the foundation pit is not stable and it is easy to cause the inrushing of soil and water.The method with deep tube wells is used to dewater and the relief of pressure,which effectively control the confined aquifer in ⑤2 layer and eliminate the hidden danger of the inrushing of soil nad water.They guarantee the floor stability of the foundation pit and the surrounding environment and the normal excavation,and the satisfactory engineering results are obtained.

关 键 词：降水降压 管井 基坑突涌 承压水 深大基坑 软土地区 

分 类 号：P641.2[天文地球—地质矿产勘探] TV223.6[天文地球—地质学]