Numerical simulation of landslide over erodible surface
Liu,Wei1,2; He,Siming1,2,3; Li,Xinpo1,2
Source PublicationGeoenvironmental Disasters
AbstractAbstractBackgroundEstimating the magnitude and intensity of landslides is a fundamental requirement in quantitatively evaluating the risks involved, and preparing a mitigation strategy. Though the physics-based dynamic model of landslide can predict the travel distance, kinematic velocity, and hazard zone, the effects of erosion and the excess pore water pressure during the dynamic process of landslide are often ignored.ResultsIn order to study these factors, a physics-based dynamic model of landslide considering erosion and excess pore water pressure is presented in this paper. A high-precision numerical method based on the finite volume method is proposed to solve the model equations. Several numerical tests are performed to verify the numerical method and the model. The effects of erosion and excess pore water pressure on the dynamic process of landslide are also analyzed.ConclusionsThe numerical results indicate that the scale and mobility of a landslide are influenced by the effect of erosion and excess pore water pressure. The excess pore water pressure can reduce the resistance to shear stress from the erodible bed and lead to a higher erosion amount and longer moving distance of the landslide. It also affects the degree of erosion and further affects the dynamic process of the landslide. The sensitivity analysis of the parameters that influence excess pore water pressure indicate that these parameters have a significant impact on the evolution of excess pore water pressure, and that the degree of saturation of bed sediment has the highest influence on excess pore water pressure.
KeywordLandslide Erosion Excess pore water pressure Numerical simulation
WOS IDBMC:10.1186/s40677-015-0027-4
PublisherSpringer International Publishing
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Document Type期刊论文
Corresponding AuthorHe,Siming
Affiliation1.Chinese Academy of Sciences; Key laboratory of Mountain Hazards and Surface Process
2.Chinese Academy of Sciences; Institute of Mountain Hazards and Environment (IMHE)
3.Chinese Academy of Sciences; Center for Excellence in Tibetan Plateau Earth Sciences
Recommended Citation
GB/T 7714
Liu,Wei,He,Siming,Li,Xinpo. Numerical simulation of landslide over erodible surface[J]. Geoenvironmental Disasters,2015,2(1).
APA Liu,Wei,He,Siming,&Li,Xinpo.(2015).Numerical simulation of landslide over erodible surface.Geoenvironmental Disasters,2(1).
MLA Liu,Wei,et al."Numerical simulation of landslide over erodible surface".Geoenvironmental Disasters 2.1(2015).
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