【摘要】 2008年5月12日汶川发生里氏8.0级大地震,在灾区形成了30多个堰塞湖,严重威胁了下游人民群众的生命财产安全,引起了世人对堰塞湖坝体稳定的高度关注。本文在前人研究的基础上,从地形地貌、诱发原因、寿命三个方面总结了堰塞湖坝体形成及存在的机理。重点分析总结了目前堰塞湖坝体稳定性的研究进展,指出影响坝体稳定性的内因为堰塞坝的形态与规模、物质组成与结构,外因为堰塞湖湖水体积;总结了前人关于影响坝体稳定性的关键因素以及室内模型试验的研究成果。最后分析了目前研究存在的问题,展望了未来的研究方向。更多还原

【Abstract】 At 14: 28,on 12May 2008,the earthquake with Richter scale 8.0 occurred at Wenchuan County,Sichuan Province.More than 30 landslide dam lakes had been formed,which made a great threat on people’s life and property and drew a great attention from people over the world.On the base of previous investigations,the paper summarizes the mechanism of forming and existence of the landslide dams in terms of topography and geomorphology,induced factors and lifetime.The focus is on the research progress of the stability of landslide dams.It is pointed out that the internal causes of the stability of landslide dams are their morphology and scale,material composition and structure.The external cause is the volume of barrier landslide dam lake.Then the paper summarizes the previous results of key causes of the stability of landslide dams and of indoor model test.Finally,the existing problems and future research direction of landslide dams are pointed out.更多还原