Dimensionless Assessment Method of Landslide Dam Formation Caused by Tributary Debris Flow Events

doi:10.1155/2019/7083058

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 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-Ting 1; Chen, Xiao-Qing1 ; Hu, Gui-Sheng1 ; Kuo, Yu-Shu 2; Huang, Yan-Rong 2; Shieh, Chjeng-Lun 2
刊名	GEOFLUIDS
	2019-01-22
卷号	2019 页码:14
ISSN号	1468-8115
DOI	10.1155/2019/7083058
通讯作者	Chen, Xiao-Qing(xqchen@imde.ac.cn)
英文摘要	In 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.
资助项目	National 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关键词	HSIAOLIN VILLAGE ; PREDICTION ; FAILURE ; RIVER ; GEOMETRY ; BREACH ; TAIWAN
WOS研究方向	Geochemistry & Geophysics ; Geology
语种	英语
出版者	WILEY-HINDAWI
WOS记录号	WOS:000482129900001
资助机构	National Natural Science Foundation of China ; CAS Light of West China Program ; Chinese Academy of Science and Technology Service Network Planning
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/26974]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Chen, Xiao-Qing
作者单位	1.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
推荐引用方式 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.