IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2013  > Vol10 No.2
Debris flows introduced in landslide deposits under rainfall conditions: The case of Wenjiagou gully
Zhou Jia-wen1,2; Cui Peng1; Yang Xing-guo2; Su Zhi-man1; Guo Xiao-jun1
Corresponding AuthorZHOU Jia-wen
2013
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume10Issue:2Pages:249-260
SubtypeArticle
AbstractDebris flows often occur in landslide deposits during heavy rainstorms. Debris flows are initiated by surface water runoff and unsaturated seepage under rainfall conditions. A physical model based on an infinitely long, uniform and void-rich sediment layer was applied to analyze the triggering of debris-flow introduced in landslide deposits. To determine the initiation condition for rainfall-induced debris flows, we conducted a surface water runoff and saturated-unsaturated seepage numerical program to model rainfall infiltration and runoff on a slope. This program was combined with physical modeling and stability analysis to make certain the initiation condition for rainfall-introduced debris flows. Taking the landslide deposits at Wenjiagou gully as an example, the initiation conditions for debris flow were computed. The results show that increase height of surface-water runoff and the decrease of saturated sediment shear strength of are the main reasons for triggering debris-flows under heavy rainfall conditions. The debris-flow triggering is affected by the depth of surface-water runoff, the slope saturation and shear strength of the sediment.
KeywordDebris Flow Rainfall Surface-water Runoff Unsaturated Seepage Physical Modeling Numerical Modeling
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-013-2492-0
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordRATES
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000317352800008
Funding OrganizationChinese National Programs for Fundamental Research and Development(2011CB409902) ; National Natural Science Foundation of China(41102194)
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5215
CollectionJournal of Mountain Science_Journal of Mountain Science-2013_Vol10 No.2
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 610041, Peoples R China
2.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhou Jia-wen,Cui Peng,Yang Xing-guo,et al. Debris flows introduced in landslide deposits under rainfall conditions: The case of Wenjiagou gully[J]. JOURNAL OF MOUNTAIN SCIENCE,2013,10(2):249-260.
APA Zhou Jia-wen,Cui Peng,Yang Xing-guo,Su Zhi-man,&Guo Xiao-jun.(2013).Debris flows introduced in landslide deposits under rainfall conditions: The case of Wenjiagou gully.JOURNAL OF MOUNTAIN SCIENCE,10(2),249-260.
MLA Zhou Jia-wen,et al."Debris flows introduced in landslide deposits under rainfall conditions: The case of Wenjiagou gully".JOURNAL OF MOUNTAIN SCIENCE 10.2(2013):249-260.
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