Application of DDA to simulate characteristics of the Tsaoling landslide

Jian Hong Wu, Chun Hwa Chen

Research output: Contribution to journalArticlepeer-review

118 Citations (Scopus)

Abstract

This study simulates the kinematic behavior of sliding blocks of rock in the earthquake-induced Tsaoling landslide using seismic discontinuous deformation analysis (DDA). We assume sliding rocks are elastic blocks. Detailed joint shear strength parameters are set in DDA in a manner compatible with what is known about the Tsaoling landslide mechanisms. Landslide run-out distance, information from survivors, and the post-failure topography are used to constrain the computational results. Calculations demonstrate that sliding rocks from the ground surface decoupled from those near the basal shear surface during the landslide. Local residents survived because surficial rocks were never deeply buried during the landslide. Additionally, shear strength parameters of material in the deposition area strongly govern final deposit topography. Computational results correlate well with actual post-failure topography.

Original languageEnglish
Pages (from-to)741-750
Number of pages10
JournalComputers and Geotechnics
Volume38
Issue number5
DOIs
Publication statusPublished - 2011 Jul

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications

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