Initiation and development of water film by seepage

doi:10.1007/s11629-010-2052-9

IMECH-IR > 水动力学与海洋工程重点实验室(2009-2011)

	Initiation and development of water film by seepage
	Lu XB(鲁晓兵); Cui P; Hu KH; Zhang XH(张旭辉); LU XB
发表期刊	Journal of Mountain Science
	2010
卷号	7 期号:4 页码:361-366
ISSN	1672-6316
摘要	When water seeps upwards through a saturated soil layer, the soil layer may become instability and water films occur and develop. Water film serves as a natural sliding surface because of its very small friction. Accordingly, debris flow may happen. To investigate this phenomenon, a pseudo-three-phase media is presented first. Then discontinuity method is used to analyze the expansion velocity of water film. Finally, perturbation method is used to analyze the case that a water flow is forced to seep upwards through the soil layer while the movement of the skeleton may be neglected relative to that of water. The theoretical evolutions of pore pressure gradient, effective stress, water velocity, the porosity and the eroded fine grains are obtained. It can be seen clearly that with the erosion and re-deposited of fine grains, permeability at some positions in the soil layer becomes smaller and smaller and, the pore pressure gradient becomes bigger and bigger, while the effective stress becomes smaller and smaller. When the effective stress equals zero, e.f. liquefaction, the water film occurs. It is shown also that once a water film occurs, it will be expanded in a speed of (U)(t)/(1 - E >).
关键词	Slope Seepage Debris Flow Water Film Mechanism Liquefaction Cracks Sand
DOI	10.1007/s11629-010-2052-9
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000284074700006
关键词[WOS]	MECHANISM ; LIQUEFACTION ; CRACKS ; SAND
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
项目资助者	National Basic Research Program of China (973 program) [2008CB425802] ; Chinese Academy of Sciences [KZCX2-YW-302-02]
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/43589
专题	水动力学与海洋工程重点实验室(2009-2011)
通讯作者	LU XB
推荐引用方式 GB/T 7714	Lu XB,Cui P,Hu KH,et al. Initiation and development of water film by seepage[J]. Journal of Mountain Science,2010,7,4,:361-366.
APA	鲁晓兵,Cui P,Hu KH,张旭辉,&LU XB.(2010).Initiation and development of water film by seepage.Journal of Mountain Science,7(4),361-366.
MLA	鲁晓兵,et al."Initiation and development of water film by seepage".Journal of Mountain Science 7.4(2010):361-366.

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