Motion characteristics of rolling rocks in Mujialiang collapse caused by the magnitude 8.0 Wenchuan earthquake

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• 作者：Shiwei Shen ; Lei Nie ; Shulin Dai ; Yan Xu ; Min Zhang…
• 关键词：Wenchuan earthquake ; Collapse ; Rolling stone ; Motion characteristic
• 刊名：Arabian Journal of Geosciences
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：8
• 期：12
• 页码：10267-10276
• 全文大小：1,625 KB
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• 作者单位：Shiwei Shen (1)
  Lei Nie (1)
  Shulin Dai (1)
  Yan Xu (1)
  Min Zhang (1)
  Lv Yan (1)
  
  1. College of Construction Engineering, Jilin University, Changchun, Jilin, 130026, China
  
• 刊物类别：Earth and Environmental Science
• 出版者：Springer Berlin Heidelberg
• ISSN：1866-7538

文摘

More than 15,000 geological disasters occurred in areas affected by the Wenchuan earthquake. Among these regions, the Mujialiang collapse was obtained as the research object in this study. The motion characteristics of the rolling, bouncing, curveting, and crashing of dangerous rocks in the caving process were evaluated using physics theory. Results show that the rocks of the Mujialiang collapse were fractured and cracked after the earthquake and can easily caved under rainstorm and aftershock. In addition, vegetation conditions along the motion path promoted the accelerated movements of dangerous rocks. The velocity of dangerous rocks reached 9.05 m/s upon arriving on the slope platform, thus endangering the houses within the area. Therefore, management projects are necessary to ensure safety of the residents in the Mujialiang ditch. Keywords Wenchuan earthquake Collapse Rolling stone Motion characteristic