IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2017  > Vol14 No.12
Hydro-mechanical analysis of rainfall-induced fines migration process within unsaturated soils
LEI Xiao-qin; YANG Zong-ji; HE Si-ming; LIU En-long; WONG Henry; LI Xin-po
Corresponding AuthorYANG Zong-ji ; HE Si-ming
2017
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume14Issue:12Pages:2603-2619
SubtypeArticle
Abstract

Seepage-induced fines migration under rainfall infiltration is a main cause leading to shallow failures in loose colluvial slopes. To describe the full process of fines migration within unsaturated soils during rainfall infiltration and the associated hydro-mechanical behaviors, a seepage-erosion-deformation coupled formulation is proposed in this paper. The governing equations proposed are implemented into a finite element code and used to investigate the influences of skeleton deformation on the rainfall infiltration process through unsaturated soil columns. The numerical results were presented in detail for a better understanding of the rainfall-induced fines migration process within unsaturated soils. Further, the obtained results are integrated into an infinite slope model for slope stability analysis. The results show that, the skeleton deformation will affect the rainfall infiltration rate and hence the timing of slope failures; meanwhile their influences are more evident if the fines deposition process is taken into account. Moreover, the slope stability could be reduced gradually due to the soil strength loss along with loss of fine particles. Therefore, particular attentions should be paid to analyzing the stability of soil slopes susceptible to internal erosion.

KeywordRainfall Infiltration Fines Migration Internal Erosion Seepage Deformation Slope Stability
DOI10.1007/s11629-017-4359-2
Indexed BySCI
Language英语
Quartile4区
TOP
WOS IDWOS:000418074700018
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20646
CollectionJournal of Mountain Science_Journal of Mountain Science-2017_Vol14 No.12
山地灾害与地表过程重点实验室
Recommended Citation
GB/T 7714
LEI Xiao-qin,YANG Zong-ji,HE Si-ming,et al. Hydro-mechanical analysis of rainfall-induced fines migration process within unsaturated soils[J]. JOURNAL OF MOUNTAIN SCIENCE,2017,14(12):2603-2619.
APA LEI Xiao-qin,YANG Zong-ji,HE Si-ming,LIU En-long,WONG Henry,&LI Xin-po.(2017).Hydro-mechanical analysis of rainfall-induced fines migration process within unsaturated soils.JOURNAL OF MOUNTAIN SCIENCE,14(12),2603-2619.
MLA LEI Xiao-qin,et al."Hydro-mechanical analysis of rainfall-induced fines migration process within unsaturated soils".JOURNAL OF MOUNTAIN SCIENCE 14.12(2017):2603-2619.
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