Experimental and discrete element numerical analysis of side slope instability induced by fissure water underlying impervious bed

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Experimental and discrete element numerical analysis of side slope instability induced by fissure water underlying impervious bed
	Liu BS(柳丙善); Li SH(李世海); Zhang L(张磊); Wang JG
刊名	Science in China Series E-Engineering & Materials Science
	2005
通讯作者邮箱	shli@imech.ac.cn
卷号	48 期号:suppl.页码:65-80
ISSN号	1006-9321
通讯作者	Li, SH (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
中文摘要	When the sliding mass contains impervious bed, rainfall can infiltrate into mountain via crevices and form higher artesian aquifer at impervious bed inferior. This will decrease slip resistance and increase sliding forces of the sliding mass, thus lowering the safety factor, and inducing landslide disasters. In this paper, a landslide experimental apparatus is designed for experimental studies on the mechanism of this type of landslides. Meanwhile, the non-dimensional parameters in the model experiment are taken into account using dimensional analysis. The experimental results show that (1) the ratio of the cleft water pressure to the overlying pressure is a crucial parameter affecting the stability of the slope; (2) when the shut-in pressure reaches 80%of the normal component of the pressure on the slip surface made up of rock and soil, landslide will occur; (3) the whole slope will start to slide when the shut-in pressure is equal to the normal component of the pressure formed by the overlying rock and soil on the upper 30%area. In this article, a discrete element method simulation is used to investigate the influence of cleft water pressure and shearing strength on the landslide stability. It can be concluded that the critical value of Ccr, ψcr, which determines the slide mass stability,increases with the increase of the water pressure; if the water pressure reaches a high level, the stability of the slide mass depends mainly on C, while the influence of ψ becomes smaller than C.
学科主题	力学
类目[WOS]	Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
研究领域[WOS]	Engineering ; Materials Science
关键词[WOS]	RAINFALL-INDUCED LANDSLIDES ; STABILITY ; INFILTRATION
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000234924800007
公开日期	2007-06-15
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/15727]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Liu BS,Li SH,Zhang L,et al. Experimental and discrete element numerical analysis of side slope instability induced by fissure water underlying impervious bed[J]. Science in China Series E-Engineering & Materials Science,2005,48(suppl.):65-80.
APA	柳丙善,李世海,张磊,&Wang JG.(2005).Experimental and discrete element numerical analysis of side slope instability induced by fissure water underlying impervious bed.Science in China Series E-Engineering & Materials Science,48(suppl.),65-80.
MLA	柳丙善,et al."Experimental and discrete element numerical analysis of side slope instability induced by fissure water underlying impervious bed".Science in China Series E-Engineering & Materials Science 48.suppl.(2005):65-80.