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 JAMP  Vol.2 No.6 , May 2014
DDA Simulations of Large Flume Tests and Large Landslides Triggered by the Wenchuan Earthquake
Qingqing Yang1, Zhiman Su2, Fei Cai3
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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
Cite this paper: Yang, Q. , Su, Z. and Cai, F. (2014) DDA Simulations of Large Flume Tests and Large Landslides Triggered by the Wenchuan Earthquake. Journal of Applied Mathematics and Physics, 2, 359-364. doi: 10.4236/jamp.2014.26043.
References

[1]   Shi, G.H. (1988) Discontinuous Deformation Analysis. Ph.D. Thesis, University of California, Berkeley.

[2]   Yang, Q.Q., Cai, F., Ugai, K., Yamada, M., Su, Z.M., Ahmed, A., Huang, R.Q. and Xu, Q. (2011) Some Factors Affecting Mass-Front Velocity of Rapid Dry Granular Flows in a Large Flume. Engineering Geology, 122, 249-260. http://dx.doi.org/10.1016/j.enggeo.2011.06.006

[3]   Chen, G.Q., Zheng, L., Zhang, Y.B. and Wu, J. (2013) Numerical Simulation in Rockfall Analysis: A Close Comparison of 2-D and 3-D DDA. Rock Mechanics and Rock Engineering, 46, 527-541. http://dx.doi.org/10.1007/s00603-012-0360-9

[4]   Ma, G.C., Matsuyama, H., Nishiyama, S. and Ohnishi, Y. (2011) Practical Studies on Rockfall Simulation by DDA. Journal of Rock Mechanics and Geotechnical Engineering, 3, 57-63. http://dx.doi.org/10.1007/s00603-012-0360-9

[5]   Xu, Q., Pei, X. and Huang, R.Q. (2010) Large-Scale Landslides Induced by the Wenchuan Earthquake. Chinese Science Press, Beijing, 408-422 (in Chinese).

 
 
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