A generalized interpolation material point method for modelling coupled seepage-erosion-deformation process within unsaturated soils

doi:10.1016/j.advwatres.2020.103578

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 > 山地灾害与地表过程重点实验室

	A generalized interpolation material point method for modelling coupled seepage-erosion-deformation process within unsaturated soils
	Lei Xiaoqin 2,3,4; He Siming 3,4; Chen Xiaoqing 3,4; Wong Henry 5; Wu Lizhou 5; Liu Enlong 1
刊名	ADVANCES IN WATER RESOURCES
	2020
卷号	141 页码:103578
关键词	Material point method Internal erosion Seepage-deformation Unsaturated soils Large deformation
ISSN号	0309-1708
DOI	10.1016/j.advwatres.2020.103578
通讯作者	Lei, Xiaoqin(xiaoqin.lei@imde.ac.cn) ; He, Siming(hsm@imde.ac.cn)
产权排序	1
文献子类	Article
英文摘要	In this paper, a computational framework based on the material point method (MPM) is developed to study the coupled seepage-erosion-deformation process within unsaturated soils. Based on the mixture theory, the unsaturated erodible soil is conceptualized as a three-phase multi-species porous medium, which is represented as a set of Lagrangian material points in a three-phase multi-species single point MPM framework. Governing equations as well as constitutive models for describing the coupled seepage-erosion-deformation behaviour within unsaturated erodible soils are presented: the solid skeleton is modelled as an elasto-plastic material; the pore water is treated as a weakly compressible fluid; while the fine particles in the solid matrix can be eroded and transferred into liquidised fine particles, and transported with the flowing liquid. This governing system is discretised with the generalized interpolation material point (GIMP) method and solved explicitly. The proposed coupled seepage-erosion-deformation GIMP is validated via three numerical examples and then employed for simulating the rainfall-induced slope failure process involving internal erosion. Thanks to the capability of the MPM in capturing large deformations, the evolution of the coupled seepage-erosion-deformation behaviour during the whole slope failure process can be obtained. This suggests that the proposed coupled GIMP framework is a promising approach for future studies of internal erosion problems in unsaturated soils involving complex multi-couplings of seepage flow, phase change and large deformations, which are difficult to be modelled by traditional mesh-based methods.
电子版国际标准刊号	1872-9657
资助项目	NSFC[41925030] ; NSFC[41790433] ; NSFC[41702331] ; National Key R&D Program of China[2017YFC1501003] ; Youth Innovation Promotion Association fund of CAS[2020368] ; CAS[KFZD-SW-424] ; Light of the West'' of CAS[Y7R2070070] ; SKLGP[SKLGP2018K013] ; IMHE[Y7K2050050] ; Finnish Academy project[286628]
WOS关键词	INDUCED FINES MIGRATION ; PARTICLE MIGRATION ; INTERNAL EROSION ; FINITE-ELEMENT ; FORMULATION ; INSTABILITY ; PLASTICITY ; ALGORITHM ; FRAMEWORK ; SUFFUSION
WOS研究方向	Water Resources
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000540669700006
资助机构	NSFC ; National Key R&D Program of China ; Youth Innovation Promotion Association fund of CAS ; CAS ; Light of the West'' of CAS ; SKLGP ; IMHE ; Finnish Academy project
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/34532]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Lei Xiaoqin; He Siming
作者单位	1.College of Water Resource & Hydropower, Sichuan University, Chengdu 610041, China 2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, Sichuan 610059, China; 3.Center for Excellence in Tibetan Plateau Earth Sciences, CAS, Beijing 100101, China; 4.Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, China; 5.Ecole Nationale des Travaux Publics de l’Etat, University of Lyon, Vaulx-en-Velin 69120, France;
推荐引用方式 GB/T 7714	Lei Xiaoqin,He Siming,Chen Xiaoqing,et al. A generalized interpolation material point method for modelling coupled seepage-erosion-deformation process within unsaturated soils[J]. ADVANCES IN WATER RESOURCES,2020,141:103578.
APA	Lei Xiaoqin,He Siming,Chen Xiaoqing,Wong Henry,Wu Lizhou,&Liu Enlong.(2020).A generalized interpolation material point method for modelling coupled seepage-erosion-deformation process within unsaturated soils.ADVANCES IN WATER RESOURCES,141,103578.
MLA	Lei Xiaoqin,et al."A generalized interpolation material point method for modelling coupled seepage-erosion-deformation process within unsaturated soils".ADVANCES IN WATER RESOURCES 141(2020):103578.