TY - JOUR
T1 - Simulating the failure process of the Xinmo landslide using discontinuous deformation analysis
AU - Chen, Kun Ting
AU - Wu, Jian Hong
N1 - Funding Information:
The corresponding author appreciates the Ministry of Science and Technology of Taiwan (Project No.: MOST 106-2625-M-006-017 and MOST 106-2918-I-006-014 -) for the financial support of a part of the paper publications. Special thanks will give to the Professor J.S. Lin at University of Pittsburgh and the reviewers to improve the paper.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/5/18
Y1 - 2018/5/18
N2 - The Xinmo landslide slope in Sichuan, China, was stable during the intensive Wenchuan Earthquake in 2008 but failed on June 24, 2017. Landslide debris buried Xinmo Village and blocked the Songpinggou River at the slope toe. This study aims to clarify the post-failure behavior of the landslide using two-dimensional discontinuous deformation analysis (2D DDA). The simulation results provide comprehensive information on the initiation and the evolution of the landslide. The failure process determined by the DDA correlates well with the seismic signal analysis results. In addition, the location of the calculated rock deposit is similar to that shown by the topographic map after the landslide. The maximum rock velocity in the landslide is 65.4 m/s. Therefore, the impacts of the high-velocity blocks and the buildings in Xinmo Village must be considered to simulate the burial of Xinmo Village by rocks and the transport of additional rocks across the Songpinggou River. This Xinmo landslide study demonstrates that the DDA accurately simulates the post-failure behavior and determines the impact area of a landslide with complicated failure processes and topography.
AB - The Xinmo landslide slope in Sichuan, China, was stable during the intensive Wenchuan Earthquake in 2008 but failed on June 24, 2017. Landslide debris buried Xinmo Village and blocked the Songpinggou River at the slope toe. This study aims to clarify the post-failure behavior of the landslide using two-dimensional discontinuous deformation analysis (2D DDA). The simulation results provide comprehensive information on the initiation and the evolution of the landslide. The failure process determined by the DDA correlates well with the seismic signal analysis results. In addition, the location of the calculated rock deposit is similar to that shown by the topographic map after the landslide. The maximum rock velocity in the landslide is 65.4 m/s. Therefore, the impacts of the high-velocity blocks and the buildings in Xinmo Village must be considered to simulate the burial of Xinmo Village by rocks and the transport of additional rocks across the Songpinggou River. This Xinmo landslide study demonstrates that the DDA accurately simulates the post-failure behavior and determines the impact area of a landslide with complicated failure processes and topography.
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U2 - 10.1016/j.enggeo.2018.04.002
DO - 10.1016/j.enggeo.2018.04.002
M3 - Article
AN - SCOPUS:85045103929
VL - 239
SP - 269
EP - 281
JO - Engineering Geology
JF - Engineering Geology
SN - 0013-7952
ER -