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

文献类型：期刊论文

作者Lei Xiaoqin3,4,5; He Siming3,5; Chen Xiaoqing3,5; Wong Henry1; Wu Lizhou1; Liu Enlong2
刊名ADVANCES IN WATER RESOURCES
出版日期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
DOI10.1016/j.advwatres.2020.103578
产权排序1
通讯作者Lei, Xiaoqin(xiaoqin.lei@imde.ac.cn) ; He, Siming(hsm@imde.ac.cn)
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
WOS关键词INDUCED FINES MIGRATION ; PARTICLE MIGRATION ; INTERNAL EROSION ; FINITE-ELEMENT ; FORMULATION ; INSTABILITY ; PLASTICITY ; ALGORITHM ; FRAMEWORK ; SUFFUSION
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研究方向Water Resources
语种英语
WOS记录号WOS:000540669700006
出版者ELSEVIER SCI LTD
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
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.Ecole Nationale des Travaux Publics de l’Etat, University of Lyon, Vaulx-en-Velin 69120, France;
2.College of Water Resource & Hydropower, Sichuan University, Chengdu 610041, China
3.Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, China;
4.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
5.Center for Excellence in Tibetan Plateau Earth Sciences, CAS, Beijing 100101, China;
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.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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