都江堰庙坝地震高位滑坡特征与成因机理研究

苟富刚 王运生 吴俊峰 陈宁 邓茜

苟富刚, 王运生, 吴俊峰, 陈宁, 邓茜. 2012: 都江堰庙坝地震高位滑坡特征与成因机理研究. 工程地质学报, 20(1): 21-29.
引用本文: 苟富刚, 王运生, 吴俊峰, 陈宁, 邓茜. 2012: 都江堰庙坝地震高位滑坡特征与成因机理研究. 工程地质学报, 20(1): 21-29.
GOU Fugang, WANG Yunsheng, WU Junfeng, CHEN Ning, DENG Xi. 2012: CHARACTERISTICS AND FORMATION MECHANISM OF HIGH SLOPE LANDSLIDE INDUCED BY WENCHUAN EARTHQUAKE IN MIAOBA COUNTY OF DUJIANGYAN CITY. JOURNAL OF ENGINEERING GEOLOGY, 20(1): 21-29.
Citation: GOU Fugang, WANG Yunsheng, WU Junfeng, CHEN Ning, DENG Xi. 2012: CHARACTERISTICS AND FORMATION MECHANISM OF HIGH SLOPE LANDSLIDE INDUCED BY WENCHUAN EARTHQUAKE IN MIAOBA COUNTY OF DUJIANGYAN CITY. JOURNAL OF ENGINEERING GEOLOGY, 20(1): 21-29.

都江堰庙坝地震高位滑坡特征与成因机理研究

基金项目: 

中国地质调查局项目(1212010914010)资助

详细信息
    作者简介:

    苟富刚,主要从事工程地质、岩体稳定性等方面的研究工作.Email: 574289742@qq.com

  • 中图分类号: P642.22

CHARACTERISTICS AND FORMATION MECHANISM OF HIGH SLOPE LANDSLIDE INDUCED BY WENCHUAN EARTHQUAKE IN MIAOBA COUNTY OF DUJIANGYAN CITY

  • 摘要: 5 12 汶川地震诱发了数以万计的滑坡,其中有一类地震高位滑坡呈现出不同于典型滑坡破坏运动模式,都江堰市虹口乡庙坝滑坡就是其中的典型代表。庙坝滑坡位于龙门山中央断裂带中段,滑坡方量约113104m3。作者通过对庙坝滑坡详细深入调查和综合分析,力求揭示该滑坡的特征及形成机制,并且对该滑坡进行了详细分区。根据该滑坡的分区及动力特征,作者认为其形成过程可概括为:孕育-启动加速-高速运动-停积堆积。在孕育阶段,作者把强震对斜坡岩体产生的加速度耦合坡体结构解释了其高速剪出的原因,其成因模式类似于拉裂-散体滑移拉裂-顺层滑移的空间组合; 在启动高度运动阶段,作者耦合该滑坡地形地貌,对抛射体进行了运动程式分析,该滑坡平均运动速度为20.1m s-1,整个形成过程仅用了32s; 在停积堆积阶段,作者耦合坡体植被及微地貌解释了上部堆积区(Ⅲ1)形成的特殊性。基于以上滑坡形成机制的分析,作者得出地球内外动力的耦合作用正是该地震高位滑坡形成的原因。
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出版历程
  • 收稿日期:  2011-05-10
  • 修回日期:  2011-09-30
  • 刊出日期:  2012-02-25

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