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Volume 54 Issue 1
Feb.  2019
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Article Contents
Journal of Southwest Jiaotong University  > 2019  >  54(1): 61-72.
CUI Shenghua, PEI Xiangjun, HUANG Runqiu, ZHANG Weifeng, LIANG Yufei. Discontinuities and Engineering Geological Significances of Strong Earthquake-Induced Daguangbao Landslide[J]. Journal of Southwest Jiaotong University, 2019, 54(1): 61-72. doi: 10.3969/j.issn.0258-2724.20160480
Citation: CUI Shenghua, PEI Xiangjun, HUANG Runqiu, ZHANG Weifeng, LIANG Yufei. Discontinuities and Engineering Geological Significances of Strong Earthquake-Induced Daguangbao Landslide[J]. Journal of Southwest Jiaotong University, 2019, 54(1): 61-72. doi: 10.3969/j.issn.0258-2724.20160480
shu

Discontinuities and Engineering Geological Significances of Strong Earthquake-Induced Daguangbao Landslide

doi: 10.3969/j.issn.0258-2724.20160480
  • Received Date: 05 Jun 2016
  • Rev Recd Date: 11 Nov 2016
    • Available Online: 27 Jul 2017
  • Publish Date: 01 Feb 2019
    Abstract
  • The Daguangbao （DGB） landslide is the largest landslide triggered by the 2008 Wenchuan earthquake and considered as one of the largest of these events in the world. In this paper, the geological cause of the DGB landslide was analysed on the basis of rich photographs, remote sensing images, and orientation data. The discontinuity features of the landslide scarp, slip zone, and deposition were investigated firstly, and then the formations of these discontinuities were studied. The effects of strong seismic shaking, geological discontinuities, and ground water on the DGB landslide were discussed. The results showed that the initiation and deposition of the DGB landslide were dominated by geological discontinuities such as local faults, bedding faults, and joint sets, which were developed during the formation of an anticline. Strong ground shaking of the Wenchuan earthquake induced the failure of these geological discontinuities, and ground water might have finally initiated the DGB landslide during the earthquake-induced discontinuity connectivity.

     

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