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首页> 外文期刊>Bulletin of engineering geology and the environment >Back analysis of a debris landslide based on a real-time video recording: sliding process and post-slide investigation
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Back analysis of a debris landslide based on a real-time video recording: sliding process and post-slide investigation

机译：基于实时视频记录的碎片滑坡的反分析：滑坡过程和滑坡后调查

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摘要

A real-time video recording of the 2008 landslide in Nanmu, China is analyzed to reveal information regarding the format, velocity, post-failure characteristics and destructiveness of the slide. This recording indicates that the failure proceeded in three stages. Back analysis has found that colluvial deposits (residual slope deposits and cemented colluvial deposits) in a weakly cemented form were the internal factor that contributed to the failure, and that damage resulting from the Wenchuan earthquake in 2008 and focused rainstorms were the external contributing factors. A field investigation showed that the destructiveness of the slide involved integral pushing damage to the base of man-made structures and damage to buildings from the impact of rolling gravel. In the 5 years following the Nanmu landslide, the local landscape has evolved further with sporadic individual rock falls or local collapses along the sliding bed and boundary. Corresponding prevention practices for the secondary disasters have demonstrated that the combined measures, including the removal of accumulated gravel, installation of a passive prevention net on the sliding bed, construction of an underground diversion culvert and a retaining wall, have been extremely effective and economical during the past 5 years.
机译：分析了中国南牧市2008年滑坡的实时视频，以揭示有关滑坡的格式，速度，破坏后特征和破坏性的信息。此记录表明故障分三个阶段进行。反向分析发现，胶结形式较弱的冲积沉积物（残余斜坡沉积和胶结冲积沉积物）是造成破坏的内部因素，而2008年汶川地震和暴雨造成的破坏是外部因素。现场调查表明，滑坡的破坏性包括整体推挤对人造结构基础的损害以及滚动碎石的冲击对建筑物的损害。在南牧滑坡之后的5年中，当地景观进一步发展，零星的个别岩石坠落或沿滑床和边界的局部塌陷。相应的针对次生灾害的预防措施表明，在此期间采取的综合措施极为有效且经济，包括清除积聚的砾石，在滑动床上安装被动防护网，修建地下导水涵洞和挡土墙。过去5年。

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