Early identification of river blocking induced by tributary debris flow based on dimensionless volume index

doi:10.1007/s10346-019-01221-8

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

	Early identification of river blocking induced by tributary debris flow based on dimensionless volume index
	Chen, Kun-Ting 2; Chen, Xiao-Qing 2; Niu, Zhi-Pan 1,3; Guo, Xiao-Jun 2
刊名	LANDSLIDES
	2019-12-01
卷号	16 期号:12 页码:2335-2352
关键词	River blocking Debris flow Debris flow dam Dimensionless volume index
ISSN号	1612-510X
DOI	10.1007/s10346-019-01221-8
产权排序	1
文献子类	Article
英文摘要	River-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.
电子版国际标准刊号	1612-5118
WOS关键词	LANDSLIDE DAM ; TYPHOON MORAKOT ; PREDICTION ; FAILURE ; RAINFALL ; SEDIMENT ; GEOMETRY ; BREACH ; MODEL
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000509669500004
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/33762]
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	Niu, Zhi-Pan
作者单位	1.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China; 3.Sichuan Univ, Inst Disaster Management & Reconstruct, Chengdu 610207, Peoples R China;
推荐引用方式 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.