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A finite volume method for two-phase debris flow simulation that accounts for the pore-fluid pressure evolution
Liu, Wei1; He, Siming1,2,3; Li, Xinpo1,2
Corresponding AuthorLi, Xinpo
2016
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
EISSN1866-6299
Volume75Issue:3Pages:DOI 10.1007/s12665-015-4920-7
SubtypeArticle
AbstractThe temporal and spatial evolution of porefluid pressure exerts strong control on debris flow motion because it can counteract normal stresses at grain contacts, reduce friction, and enhance bulk flow mobility. In Iverson's two-phase debris flow model, the depth-averaged pore pressure equation, which takes into account the effect of shear-induced dilatancy, was combined with a previous model to describe the simultaneous evolution of flow velocity and depth, solid mass, and pore-fluid pressure. In this work, a high-resolution scheme based on the finite volume method was used to solve the system of equations. Several numerical tests were performed to verify the ability of the presented model and the accuracy of the proposed numerical method. Numerical results were compared with experimental data obtained in a laboratory, and the effectiveness of the proposed numerical method for solving practical problems has been proven. Numerical results indicated that increases of the pore-fluid pressure could enhance the motion of debris flow and expand the spread area. Furthermore, results showed that the debris shear-induced dilatancy could affect the evolution of pore-fluid pressure, thus further influencing the motion of debris flow.
KeywordDebris Flows Pore-fluid Pressure Finite Volume Method Shear-induced Dilatancy
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s12665-015-4920-7
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Geology ; Water Resources
Indexed BySCI
WOS KeywordDAM-BREAK ; GRANULAR AVALANCHES ; MODEL ; LANDSLIDES ; ENTRAINMENT ; TOPOGRAPHY ; TERRAIN ; MOTION ; MASSES
Language英语
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000370241400028
Funding OrganizationNational Natural Science Foundation of China (NSFC)(41272346 ; National Key Basic Research Program of China(2013CB733201) ; 41101008)
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/15113
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, IMHE, Chengdu, Peoples R China
2.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Liu, Wei,He, Siming,Li, Xinpo. A finite volume method for two-phase debris flow simulation that accounts for the pore-fluid pressure evolution[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(3):DOI 10.1007/s12665-015-4920-7.
APA Liu, Wei,He, Siming,&Li, Xinpo.(2016).A finite volume method for two-phase debris flow simulation that accounts for the pore-fluid pressure evolution.ENVIRONMENTAL EARTH SCIENCES,75(3),DOI 10.1007/s12665-015-4920-7.
MLA Liu, Wei,et al."A finite volume method for two-phase debris flow simulation that accounts for the pore-fluid pressure evolution".ENVIRONMENTAL EARTH SCIENCES 75.3(2016):DOI 10.1007/s12665-015-4920-7.
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