IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2014  > Vol11 No.6
A Comparison of Conventional and Shear-Rate Dependent Mohr-Coulomb Models for Simulating Landslides
LIANG Dong-fang; HE Xu-zhen
Corresponding AuthorLIANG Dong-fang
2014-11
Source PublicationJournal of Mountain Science
Volume11Issue:6Pages:1478-1490
AbstractLandslides may cause many fatalities and heavy economic losses, so it is vital to understand their mechanics so as to take appropriate measures to mitigate their risk. Phenomenally, the loose soil behaves like frictional material in most circumstances, so Mohr-Coulomb type equations are often used to describe their movement. However, these models generally do not consider the influence of the shear-rate on the Mohr-Coulomb friction angle, so the shear-rate dependence effect on the soil flow and landslide runout is not well understood. This paper reports on an application of the incompressible Smoothed Particle Hydrodynamics (SPH) method to the dynamics of dry granular assemblies. The traditional model with a constant friction angle is compared with the modified Mohr-Coulomb model with a variable friction angle related to the shear-rate. It is found that the shear-rate dependence effect is negligible for shallow granular flows along mild slopes. With steeper slopes of the ground and larger aspect ratios of the initial soil column, the rate-dependence effect becomes more important.
KeywordLandslides Granular Flows Mohr-coulomb Model Smoothed Particle Hydrodynamics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/7416
CollectionJournal of Mountain Science_Journal of Mountain Science-2014_Vol11 No.6
Corresponding AuthorLIANG Dong-fang
Recommended Citation
GB/T 7714
LIANG Dong-fang,HE Xu-zhen. A Comparison of Conventional and Shear-Rate Dependent Mohr-Coulomb Models for Simulating Landslides[J]. Journal of Mountain Science,2014,11(6):1478-1490.
APA LIANG Dong-fang,&HE Xu-zhen.(2014).A Comparison of Conventional and Shear-Rate Dependent Mohr-Coulomb Models for Simulating Landslides.Journal of Mountain Science,11(6),1478-1490.
MLA LIANG Dong-fang,et al."A Comparison of Conventional and Shear-Rate Dependent Mohr-Coulomb Models for Simulating Landslides".Journal of Mountain Science 11.6(2014):1478-1490.
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