强震区断裂活动与大型滑坡关系研究

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摘要活动断裂带与大型滑坡之间的关系一直是人们关注的热点问题。通过汶川Ms8.0级地震活动断裂和大型滑坡调查，阐述龙门山活动断裂带大型滑坡形成的地质背景，总结活动断裂带大型地震滑坡的分布特征、形态特征、启动特征和分段特征及其相关影响因素。基于野外调查资料，以龙门山中央断裂带谢家店子滑坡为例，采用离散元方法模拟分析滑坡的启动和快速运移过程，提出高速远程滑坡的致灾后果决定于启动方式、飞行路径和堆积特征3个方面。本项研究对于认识断裂活动与大型滑坡之间的关系以及滑坡成灾后果预测具有重要的指导作用。

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关键词 ：地震工程, 汶川地震, 地震滑坡, 活动断裂, 数值模拟, 离散元法

Abstract：The relationship between active fault zone and large-scale landslides is a major issue on which people always concern. Based on field investigation of active fault zones and large-scale landslides induced by Wenchuan Ms 8.0 earthquake，the geological setting for large-scale landslides initiation in the Longmenshan active fault zones is documented，and the characteristics of distribution，shape，initiation and segmentation，as well as their influential factors，are summarized. Taking the Xiejiadianzi landslide-debris flow near the central Longmenshan fault zone as an example，simulations of the processes of landslide starting and fast slipping have been carried out by the discrete element method(DEM). It is thought that the disaster result of a rapid and long run-out landslide are dominated by the starting style，debris flying route and dumpling features. This research provides important information for the realization of the relationship between the fault movement and the formation of large-scale landslides，as well as prediction of the disaster result caused by earthquake landslides.

Key words： earthquake engineering Wenchuan earthquake earthquake induced landslide active fault numerical simulation discrete element method(DEM)

收稿日期: 2010-08-24

引用本文:

张永双1，2，苏生瑞3，吴树仁1，2，石菊松1，2，孙萍1，2，姚鑫1，2，熊探宇1，2. 强震区断裂活动与大型滑坡关系研究[J]. 岩石力学与工程学报, 2011, 30(S2): 3503-3513.
ZHANG Yongshuang1，2，SU Shengrui3，WU Shuren1，2，SHI Jusong1，2，SUN Ping1，2，. RESEARCH ON RELATIONSHIP BETWEEN FAULT MOVEMENT AND LARGE-SCALE LANDSLIDE IN INTENSIVE EARTHQUAKE REGION. , 2011, 30(S2): 3503-3513.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/IS2/3503

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