IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2015  > Vol12 No.1
Dynamic process analysis for the formation of Yangjiagou landslide-dammed lake triggered by the Wenchuan earthquake, China
Zhou, Jia-wen1,2; Cui, Peng1; Fang, Hua1
Corresponding AuthorZhou, Jia-wen
2013
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume10Issue:3Pages:331-342
SubtypeArticle
AbstractThe damming of rivers by landslides resulting in the formation of a lake was one of the typical secondary geological hazards triggered by the Wenchuan earthquake which occurred on May 12, 2008. Some landslide-dammed lakes were at a high risk of causing further damage since the rainstorm season was expected soon after the earthquake. Understanding the dynamic processes in the formation of landslide-dammed lakes is helpful in planning the mitigation measures. The Yangjiagou landslide-dammed lake was selected as a case study to investigate the typical processes of dam formation. The dynamic simulation of the formation of the Yangjiagou landslide-dammed lake was divided into two steps: the landslide step and the overflow/overtopping step. Two-dimensional discrete element method (DEM) was adopted to investigate the mechanics of the Yangjiagou landslide. The landslide process was found to be controlled by the bond strength and residual friction coefficient of the DEM models. Computational results show that the formation of the landslide dam took approximately 35 s. The maximum velocity of a typical particle was approximately 26.8 m/s. The shallow-water equation and finite difference method were used to analyze the hydrodynamic mechanisms of the overflow process of the landslide-dammed lake. Computational results show that overflow would have occurred 15.1 h after the river was blocked, and overtopping failure occurs for the landslide dam in the rainstorm season when the water flow is large enough, causing a major disaster.
KeywordWenchuan Earthquake Landslide River Blocking Dammed Lake Numerical Simulation Dynamic Process
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1007/s10346-013-0387-3
WOS Subject ExtendedEngineering ; Geology
Indexed BySCI
WOS KeywordRAPID LANDSLIDES ; MODEL ; ROCK ; DAMS ; MOTION
Language英语
Quartile3区
TOP
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000319768400008
Funding OrganizationKey Project of Chinese National Programs for Fundamental Research and Development(2011CB409902) ; Chinese National Natural Science Foundation(41030742 ; China Postdoctoral Science Foundation Funded Project(20110491741) ; 41102194)
Citation statistics
Cited Times:52[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/8320
CollectionJournal of Mountain Science_Journal of Mountain Science-2015_Vol12 No.1
山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610044, Sichuan, Peoples R China
2.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Jia-wen,Cui, Peng,Fang, Hua. Dynamic process analysis for the formation of Yangjiagou landslide-dammed lake triggered by the Wenchuan earthquake, China[J]. LANDSLIDES,2013,10(3):331-342.
APA Zhou, Jia-wen,Cui, Peng,&Fang, Hua.(2013).Dynamic process analysis for the formation of Yangjiagou landslide-dammed lake triggered by the Wenchuan earthquake, China.LANDSLIDES,10(3),331-342.
MLA Zhou, Jia-wen,et al."Dynamic process analysis for the formation of Yangjiagou landslide-dammed lake triggered by the Wenchuan earthquake, China".LANDSLIDES 10.3(2013):331-342.
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