| 桩孔内反复抽排地下水诱发地面塌陷成因分析及防治对策 |
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| 引用本文： | 邱兵,肖尧,王义喜.桩孔内反复抽排地下水诱发地面塌陷成因分析及防治对策[J].四川地质学报,2011(3):344-346,363. |
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| 作者姓名： | 邱兵 肖尧 王义喜 |
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| 作者单位： | 贵州省地矿局第二工程勘察院; |
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| 摘 要： | 某大桥位于贵州省中部一岩溶槽准谷内,上覆第四系土层厚3～12m,下伏基岩为灰岩和白云岩,地下水埋深0～2m,采用人工挖孔桩基础,以中等风化基岩作为地基持力层,设计86根桩,桩间距3～10m,施工期间,由于反复抽排地下水导致场地周边出现多处岩溶塌陷。本文在实地调查的基础上论述了其形成机制,并对类似工程提出了防治对策。
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| 关 键 词： | 岩溶塌陷 抽排地下水 成因分析 |
Collapse Induced by Groundwater Withdraw and Its Control |
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| QIU Bing XIAO Yao WANG Yi-xi.Collapse Induced by Groundwater Withdraw and Its Control[J].Acta Geologica Sichuan,2011(3):344-346,363. |
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| Authors: | QIU Bing XIAO Yao WANG Yi-xi |
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| Institution: | QIU Bing XIAO Yao WANG Yi-xi (No.2 Institute of Engineering Investigation,Guizhou Bureau of Geology and Mineral Resources,Zunyi,Guizhou 563000) |
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| Abstract: | A bridge in central Guizhou is located in a karst valley composed of the Permian and Triassic carbonate rock.A great amount of pumping of groundwater for hand-dug cast-in-situ pile foundation in the bridge construction resulted in karst collapse.This paper makes an approach to collapse mechanism and puts forward corresponding control measures. |
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| Keywords: | karst collapse pumping of groundwater genetic mechanism |
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