Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model

doi:10.1007/s11629-019-5744-9

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-2020 > Vol17 No.10

	Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model
	Liu Zi-zhen; Yan Zhi-xin; Qiu Zhan-hong; Wang Xiao-gang; Li Ji-wei
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2020
卷号	17 期号:10 页码:2577-2590
关键词	Rainfall infiltration Unsaturated infiltration model Wetting front saturation Slope safety factor
ISSN号	1672-6316
DOI	10.1007/s11629-019-5744-9
文献子类	Article
英文摘要	Based on the principle of saturated infiltration and the Green-Ampt model, an unsaturated infiltration model for a soil slope surface was established for either constant moisture content, or depth-varying moisture content and the slope. Infiltration parameters in the partially saturated slope were revealed under sustained rainfall. Through analysis of the variation of initial moisture content in the slope, the ponding time, infiltration depth, and infiltration rate were deduced for an unsaturated soil slope subject to rainfall infiltration. There is no ponded water on the surface of the slope under sustained low-intensity rainfall. The results show that the infiltration parameters of an unsaturated slope are influenced by the initial moisture content and the wetting front saturation, the soil cohesion and rainfall intensity under sustained rainfall. More short-term slope failures can occur with the decrease of cohesion of the soil of the slope. The ponding time and infiltration depth differ considering constant or different initial moisture content respectively in the soil slope. Then, best-fit curves of the infiltration rate, ponding time, and infiltration depth to the wetting front saturation were obtained with constant or different initial moisture contents. And the slope failure time is roughly uniform when subject to a rainfall intensityI>5 mm/h.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000578876400018
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/50627]
专题	Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.10
推荐引用方式 GB/T 7714	Liu Zi-zhen,Yan Zhi-xin,Qiu Zhan-hong,et al. Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(10):2577-2590.
APA	Liu Zi-zhen,Yan Zhi-xin,Qiu Zhan-hong,Wang Xiao-gang,&Li Ji-wei.(2020).Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model.JOURNAL OF MOUNTAIN SCIENCE,17(10),2577-2590.
MLA	Liu Zi-zhen,et al."Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model".JOURNAL OF MOUNTAIN SCIENCE 17.10(2020):2577-2590.