Application of the material point method to simulate the post-failure runout processes of the Wangjiayan landslide

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

	Application of the material point method to simulate the post-failure runout processes of the Wangjiayan landslide
	Li, Xinpo1,2 ; Wu, Yong1,2 ; He, Siming1,2,3 ; Su, Lijun1,2,3
刊名	ENGINEERING GEOLOGY
	2016-09-30
卷号	212 页码:1-9
关键词	Material point method Run-out analysis Landslide deposition Kinematics Effects of buildings
ISSN号	0013-7952
通讯作者	Li, Xinpo
英文摘要	The first part of the paper presents a brief description of the material point method (MPM) including the governing equations, solution scheme and a benchmark problem of soil collapse simulated using the method. In the second and third part of the paper, the post-failure runout process of the Wangjiayan landslide is simulated and analyzed. The landslide's final topography and information from post-failure in-situ survey and laboratory tests are used to constrain the accuracy of computational results. The kinematic behaviors of the failure mass are investigated in terms of displacement, velocity, effective plastic strain fields and topography changes during the movement. Comparisons are made between conditions with and without buildings on the deposition area. Numerical computations demonstrate that the presence of buildings on the sliding path strongly governs the flow regime, run-out distance, velocity, strain field and final deposition topography of the landslide. So it is very essential, to incorporate the effects of buildings in the modelling and analyses. Numerical results considering buildings show that the slide lasts about 30 s with the most rapid phase occurring between 6 and 12 s, and that the maximum simulated velocity among the sliding particles in the landslide is 43.5.m/s, indicates that the moving of the landslide mass was very fast. The run-out distance simulated with MPM matches the measured post earthquake topography well, whereas the shape of the simulated deposition zone is a little differs. The buildings influence the sliding by shortening the overall run-out distance, decelerating the movement of the bottom layer, and increasing the internal deformation and mixing among deposition layers. (C) 2016 Elsevier B.V. All rights reserved.
学科主题	地球科学 ; 工程地质学
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Engineering, Geological ; Geosciences, Multidisciplinary
研究领域[WOS]	Engineering ; Geology
关键词[WOS]	2008 WENCHUAN EARTHQUAKE ; SMOOTHED PARTICLE HYDRODYNAMICS ; TSAOLING LANDSLIDE ; GRANULAR-MATERIALS ; FLOW ; DEFORMATION ; MODEL ; SICHUAN ; CHINA ; MASS
收录类别	SCI
语种	英语
WOS记录号	WOS:000385600200001
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/17738]
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, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Chengdu, Peoples R China
推荐引用方式 GB/T 7714	Li, Xinpo,Wu, Yong,He, Siming,et al. Application of the material point method to simulate the post-failure runout processes of the Wangjiayan landslide[J]. ENGINEERING GEOLOGY,2016,212:1-9.
APA	Li, Xinpo,Wu, Yong,He, Siming,&Su, Lijun.(2016).Application of the material point method to simulate the post-failure runout processes of the Wangjiayan landslide.ENGINEERING GEOLOGY,212,1-9.
MLA	Li, Xinpo,et al."Application of the material point method to simulate the post-failure runout processes of the Wangjiayan landslide".ENGINEERING GEOLOGY 212(2016):1-9.