Mechanism and Mechanical Model of Karst Collapse in Over-Pumping Area
  • 【摘要】

    Through the geological investigation of karstcollapses of Zaozhuang,China,it is found that themechanism of kamt collapse in the area of over-pumping is characterized by the seepage effect andthat thes... 展开>>Through the geological investigation of karstcollapses of Zaozhuang,China,it is found that themechanism of kamt collapse in the area of over-pumping is characterized by the seepage effect andthat theseepage pressure effect related to over-pumping isthe original induced factor of the kamtcollapse.Accordingto the forming mechanism,the process of the karstcollapse can be divided into two phases ofthe inter-collapsephase and the surface collapse phase.Therefore.basedon the theory of М·М·Протодьяконовand the limit equilibrium theory,this paper has establishedthe mechanical models in surface-collapse phaseand determined the height of equilibrium arch ofsoil-hole in inter-collapse phase. Meanwhile,anevaluationon the karat collapses of Zaozhuang city,China,hasbeen completed by means of mechanical models.Theresults show that the mechanical medeh agree with theforming mechanism of kamt collapse of Zaozhuang city. Thus,it is proved that the karst collapse models canbe used in the evaluation of the kamt collapses inover-pumping area. 收起<<

  • 【作者】

    He Keqiang  Wang Bin 

  • 【作者单位】

    Qingdao

  • 【会议名称】

    2004年度土木工程论坛

  • 【会议时间】

    2004-04-01

  • 【会议地点】

    山东青岛

  • 【主办单位】

    青岛理工大学

  • 【语种】

    chi

  • 【关键词】

    岩溶塌陷  Kamt崩溃机制  力学模型  过度抽水  渗压效应