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Influence of inflow discharge and bed erodibility on outburst flood of landslide dam
Zhou Ming-jun1,2; Zhou, Gordon G. D.1,2; Cui, Kahlil Fredrick E.1,2; Song Dong-ri1,2; Lu Xue-qiang1,2
Corresponding AuthorZhou, Gordon G. D.(gordon@imde.ac.cn)
2019-04-01
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume16Issue:4Pages:778-792
SubtypeArticle
Contribution Rank1
AbstractAccurate prediction of the hydrographs of outburst floods induced by landslide dam overtopping failure is necessary for hazard prevention and mitigation. In this study, flume model tests on the breaching of landslide dams were conducted. Unconsolidated soil materials with wide grain size distributions were used to construct the dam. The effects of different upstream inflow discharges and downstream bed soil erosion on the outburst peak discharge were investigated. Experimental results reveal that the whole hydrodynamic process of landslide dam breaching can be divided into three stages as defined by clear inflection points and peak discharges. The larger the inflow discharge, the shorter the time it takes to reach the peak discharge, and the larger the outburst flood peak discharge. The scale of the outburst floods was found to be amplified by the presence of an erodible bed located downstream of the landslide dam. This amplification decreases with the increase of upstream inflow. In addition, the results show that the existence of an erodible bed increases the density of the outburst flow, increasing its probability of transforming from a sediment flow to a debris flow.
KeywordLandslide dam Inflow discharge Erodible bed Outburst flood
DOI10.1007/s11629-018-5312-8
Indexed BySCI
WOS KeywordDEBRIS-FLOW ; PEAK OUTFLOW ; WENCHUAN EARTHQUAKE ; HSIAOLIN VILLAGE ; BREACH ; SIMULATION ; FAILURE ; HYDROGRAPH ; EROSION ; TAIWAN
Language英语
Funding ProjectNational Natural Science Foundation of China[41731283] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDB-SSW-DQC010] ; Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS)
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000464752500005
Funding OrganizationNational Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) ; Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS)
PublisherSCIENCE PRESS
EI Accession NumberSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25917
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorZhou, Gordon G. D.
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhou Ming-jun,Zhou, Gordon G. D.,Cui, Kahlil Fredrick E.,et al. Influence of inflow discharge and bed erodibility on outburst flood of landslide dam[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(4):778-792.
APA Zhou Ming-jun,Zhou, Gordon G. D.,Cui, Kahlil Fredrick E.,Song Dong-ri,&Lu Xue-qiang.(2019).Influence of inflow discharge and bed erodibility on outburst flood of landslide dam.JOURNAL OF MOUNTAIN SCIENCE,16(4),778-792.
MLA Zhou Ming-jun,et al."Influence of inflow discharge and bed erodibility on outburst flood of landslide dam".JOURNAL OF MOUNTAIN SCIENCE 16.4(2019):778-792.
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