A finite volume method for two-phase debris flow simulation that accounts for the pore-fluid pressure evolution

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 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
刊名	ENVIRONMENTAL EARTH SCIENCES
	2016-02-01
卷号	75 期号:3 页码:DOI 10.1007/s12665-015-4920-7
关键词	Debris flows Pore-fluid pressure Finite volume method Shear-induced dilatancy
ISSN号	1866-6280
通讯作者	Li, Xinpo
英文摘要	The 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.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
研究领域[WOS]	Environmental Sciences & Ecology ; Geology ; Water Resources
关键词[WOS]	DAM-BREAK ; GRANULAR AVALANCHES ; MODEL ; LANDSLIDES ; ENTRAINMENT ; TOPOGRAPHY ; TERRAIN ; MOTION ; MASSES
收录类别	SCI
语种	英语
WOS记录号	WOS:000370241400028
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/15113]
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
作者单位	1.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
推荐引用方式 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.