IMHE OpenIR  > 山地灾害与地表过程重点实验室
Dimensionless Assessment Method of Landslide Dam Formation Caused by Tributary Debris Flow Events
Chen, Kun-Ting1; Chen, Xiao-Qing1; Hu, Gui-Sheng1; Kuo, Yu-Shu2; Huang, Yan-Rong2; Shieh, Chjeng-Lun2
Corresponding AuthorChen, Xiao-Qing(xqchen@imde.ac.cn)
2019-01-22
Source PublicationGEOFLUIDS
ISSN1468-8115
Volume2019Pages:14
AbstractIn this study, we develop a dimensionless assessment method to evaluate landslide dam formation by considering the relationship between the run-out distance of a tributary debris flow and the width of the main stream, deposition thickness of the tributary debris flow, and the water depth of the main stream. Based on the theory of debris flow run-out distance and fan formation, landslide dam formation may result from a tributary debris flow as a result of two concurrent formation processes: (1) the runout distance of the tributary debris flow must be greater than the width of the main stream, and (2) the minimum deposition thickness of the tributary debris flow must be higher than the in situ water depth of the main stream. At the confluence, one of four types of depositional scenarios may result: (1) the tributary debris flow enters into the main stream and forms a landslide dam; (2) the tributary debris flow enters into the main stream but overflow occurs, thus preventing complete blockage of the main stream; (3) the tributary debris flow enters into the main stream, does not reach the far bank, and sediment remains partially above the water elevation of the main stream; or (4) the tributary debris flow enters into the main stream, does not reach the far bank, and sediment is fully submerged in the main stream. This method was applied to the analysis of 11 tributary debris flow events during Typhoon Morakot, and the results indicate that the dimensionless assessment method can be used to estimate potential areas of landslide dam formation caused by tributary debris flows. Based on this method, government authorities can determine potential areas of landslide dam formation caused by debris flows and mitigate possible disasters accordingly through a properly prepared response plan, especially for early identification.
DOI10.1155/2019/7083058
Indexed BySCI
WOS KeywordHSIAOLIN VILLAGE ; PREDICTION ; FAILURE ; RIVER ; GEOMETRY ; BREACH ; TAIWAN
Language英语
Funding ProjectNational Natural Science Foundation of China[41501012] ; National Natural Science Foundation of China[41661144028] ; CAS Light of West China Program ; Chinese Academy of Science and Technology Service Network Planning[KFJ-STS-ZDTP-015]
WOS Research AreaGeochemistry & Geophysics ; Geology
WOS SubjectGeochemistry & Geophysics ; Geology
WOS IDWOS:000482129900001
Funding OrganizationNational Natural Science Foundation of China ; CAS Light of West China Program ; Chinese Academy of Science and Technology Service Network Planning
PublisherWILEY-HINDAWI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26974
Collection山地灾害与地表过程重点实验室
Corresponding AuthorChen, Xiao-Qing
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.Natl Cheng Kung Univ, Dept Hydraul & Ocean Engn, Tainan 70101, Taiwan
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,Hu, Gui-Sheng,et al. Dimensionless Assessment Method of Landslide Dam Formation Caused by Tributary Debris Flow Events[J]. GEOFLUIDS,2019,2019:14.
APA Chen, Kun-Ting,Chen, Xiao-Qing,Hu, Gui-Sheng,Kuo, Yu-Shu,Huang, Yan-Rong,&Shieh, Chjeng-Lun.(2019).Dimensionless Assessment Method of Landslide Dam Formation Caused by Tributary Debris Flow Events.GEOFLUIDS,2019,14.
MLA Chen, Kun-Ting,et al."Dimensionless Assessment Method of Landslide Dam Formation Caused by Tributary Debris Flow Events".GEOFLUIDS 2019(2019):14.
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