A Comparison of Conventional and Shear-Rate Dependent Mohr-Coulomb Models for Simulating Landslides

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 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
刊名	Journal of Mountain Science
	2014-11
卷号	11 期号:6 页码:1478-1490
关键词	Landslides Granular flows Mohr-Coulomb model Smoothed Particle Hydrodynamics
通讯作者	LIANG Dong-fang
英文摘要	Landslides 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.
收录类别	SCI
公开日期	2014-11-18
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/7416]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2014_Vol11 No.6
推荐引用方式 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.