| 岩溶塌陷的致塌力学模型研究——以泰安市东羊娄岩溶塌陷为例 |
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| 引用本文： | 王滨,李治广,董昕,陈立.岩溶塌陷的致塌力学模型研究——以泰安市东羊娄岩溶塌陷为例[J].自然灾害学报,2011(4). |
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| 作者姓名： | 王滨 李治广 董昕 陈立 |
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| 作者单位： | 石家庄经济学院工程学院;河北省水资源可持续利用与开发重点实验室;中国地质科学院水文地质环境地质研究所; |
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| 摘 要： | 2003年5月泰安市东羊娄村发生大型岩溶塌陷地质灾害,仅塌陷坑面积就达750m2。经调查研究,真空吸蚀致塌和重力致塌是该岩溶塌陷形成的致塌力学机制,致塌力主要为覆盖层土体自身重力和地下水快速下降过程中形成的真空负压吸蚀力。根据岩溶塌陷形成机理的分析结果,分3部分建立了岩溶塌陷的致塌力学综合模型,即基于普氏天然平衡拱理论的土洞极限平衡高度公式、基于极限平衡理论的桶状塌陷坑形成判别公式和基于莫尔-库伦强度理论的漏斗状塌坑形成判别公式,经东羊娄村岩溶塌陷后验分析,计算结果与岩溶塌陷的实际情况基本吻合。
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| 关 键 词： | 岩溶塌陷 形成机制 力学模型 泰安市 东羊娄村 |
Study on mechanical model of karst collapse:a case of karst collapse in Dongyanglou Village,Tai'an City |
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| WANG Bin,,LI Zhi-guang,GONG Xin,CHEN-Li.Study on mechanical model of karst collapse:a case of karst collapse in Dongyanglou Village,Tai'an City[J].Journal of Natural Disasters,2011(4). |
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| Authors: | WANG Bin LI Zhi-guang GONG Xin CHEN-Li |
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| Institution: | WANG Bin1,2,3,LI Zhi-guang1,GONG Xin1,CHEN-Li3(1.Shijiazhuang University of Economics,Shijiazhuang 050031,China,2.Key Lab of Water Recourses Sustainable Utilization and Exploitation of Heibei Province,3.Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,China) |
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| Abstract: | On May 31,2003,a very big karst collapse with an area of 750 m2 occurred in farmland east of Dongyanglou Village,Tai'an City,Shangdong Province,which damaged the farmland and caused very serious soil loss.According to geological investigation,the deadweight of cover-layer soil and differential atmospheric pressure caused by groundwater level falling were the primary collapse forces.In this paper,based on the equilibrium arch theory,the limiting equilibrium theory and the Mohr-Coulomb strength theory,the col... |
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| Keywords: | Karst collapse forming mechanism mechanical model Tai'an City Dongyanglou Village |
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