DDA Simulations of Large Flume Tests and Large Landslides Triggered by the Wenchuan Earthquake

Qingqing Yang¹, Zhiman Su², Fei Cai³

¹Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China.
²Institute of Mountain Hazards and Environment, Chengdu, China.
³Department of Environmental and Engineering Science, Gunma University, Kiryu, Japan.

DOI: 10.4236/jamp.2014.26043                

Abstract

This paper presents some numerical simulations using Discontinuous Deformation Analysis (DDA). First, DDA was applied to reproduce a series of granular flows released in a large flume. The comparison between simulated velocity and that measured in the tests demonstrates the effectiveness of DDA on description of kinematic behavior of blocky assembly. Simulated results were highly sensitive to the shape and angularity of blocky elements. Employing unrealistic block might result in different behavior from real situation. Second, three large landslides triggered by the Wenchuan earthquake were simulated. A well agreement with field data was obtained if apparent friction coefficient determined by post-analysis was adopted.

Keywords

Discontinuous Deformation Analysis, Flume Test, Lansdslide

Conflicts of Interest

The authors declare no conflicts of interest.

References

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