IMHE OpenIR  > 山地灾害与地表过程重点实验室
Early identification of river blocking induced by tributary debris flow based on dimensionless volume index
Chen, Kun-Ting1; Chen, Xiao-Qing1; Niu, Zhi-Pan2,3; Guo, Xiao-Jun1
2019-12-01
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume16Issue:12Pages:2335-2352
SubtypeArticle
Contribution Rank1
AbstractRiver-blocking events induced by tributary debris flows occur frequently in mountainous areas. If a dam formed by a river-blocking debris flow were damaged, a massive outburst flood could induce downstream hazards. Therefore, early identification of areas potentially at risk of river blocking is essential for hazard mitigation, particularly in extensive mountainous areas. This study proposed a dimensionless volume index (DVI) to evaluate river-blocking formation by considering the relationship between the deposition volume of a tributary debris flow in a river and the minimum river-blocking volume. The values of both parameters can be established based on the theory of debris flow run-out distance, deposition width, and deposition thickness with consideration of the effects of drag force, hydrostatic force, and buoyancy. The efficacy of the proposed method was demonstrated through two case studies of mainstream blocking/non-blocking by tributary debris flow events in Taiwan during Typhoon Morakot. The results indicated that early identification of river blocking could be achieved using the DVI based on a pre-established database of potential debris flow hazard areas, including local site information, rainfall intensities at potential debris flow hazard areas under varying recurrence periods, and mainstream discharge at varying recurrence periods.
KeywordRiver blocking Debris flow Debris flow dam Dimensionless volume index
DOI10.1007/s10346-019-01221-8
Indexed BySCI
WOS KeywordLANDSLIDE DAM ; TYPHOON MORAKOT ; PREDICTION ; FAILURE ; RAINFALL ; SEDIMENT ; GEOMETRY ; BREACH ; MODEL
Language英语
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000509669500004
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33762
Collection山地灾害与地表过程重点实验室
Corresponding AuthorNiu, Zhi-Pan
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China;
2.Sichuan Univ, Inst Disaster Management & Reconstruct, Chengdu 610207, Peoples R China;
3.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
Corresponding 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
Chen, Kun-Ting,Chen, Xiao-Qing,Niu, Zhi-Pan,et al. Early identification of river blocking induced by tributary debris flow based on dimensionless volume index[J]. LANDSLIDES,2019,16(12):2335-2352.
APA Chen, Kun-Ting,Chen, Xiao-Qing,Niu, Zhi-Pan,&Guo, Xiao-Jun.(2019).Early identification of river blocking induced by tributary debris flow based on dimensionless volume index.LANDSLIDES,16(12),2335-2352.
MLA Chen, Kun-Ting,et al."Early identification of river blocking induced by tributary debris flow based on dimensionless volume index".LANDSLIDES 16.12(2019):2335-2352.
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