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Formation conditions of outburst debris flow triggered by overtopped natural dam failure
Jiang Xiangang1,2,3; Cui Peng1,4; Chen Huayong1; Guo Yayong1,2
Corresponding AuthorCui Peng
2017
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume14Issue:3Pages:821-831
SubtypeArticle
Abstract

Natural dams formed by landslides may produce disastrous debris flows after dam outburst. However, studies on the critical conditions required for the formation of outburst debris flow resulting from natural dam failure are still at an early stage. In this paper, we present the results of a series of laboratory tests that assessed three different materials, five different flume bed slope angles (2 degrees, 7 degrees, 9 degrees, 10 degrees, and 13 degrees), two in-flow rates, and four types of dam geometric shapes. The results showed that the unit weight of downstream fluid increased with increasing bed channel slope. Additionally, a critical flume bed angle was found for debris flow formation. Furthermore, the combination of lake volume and flume bed angle was found to influence the formation of debris flow. A nonlinear trend was observed between the unit weights of debris flow and the uniformity coefficients of solid material. Based on the theory of stream power, a critical condition for debris flow formation from natural dam failure was established. Based on two case studies, the results indicate that the condition that was established for debris flow formation following natural dam failure agrees well with reality.

KeywordNatural Dam Debris Flow Overtopping Critical Condition
Subject Area地理学 ; 水文学 ; 水利工程
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1007/s10346-016-0751-1
URL查看原文
WOS Subject ExtendedEngineering ; Geology
Indexed BySCI
WOS KeywordLANDSLIDE DAM ; FLOODS ; BREACH
Language英语
Quartile2区
TOP
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000401697900004
Funding OrganizationProject of International Cooperation and Exchanges NSFC(41520104002) ; Project of Bureau of International Cooperation ; Chinese Academy of Sciences project(131551KYSB20130003)
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17987
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610044, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Sichuan Agr Univ, Coll Civil Engn, Chengdu 611830, Peoples R China
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Chengdu, 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
Recommended Citation
GB/T 7714
Jiang Xiangang,Cui Peng,Chen Huayong,et al. Formation conditions of outburst debris flow triggered by overtopped natural dam failure[J]. LANDSLIDES,2017,14(3):821-831.
APA Jiang Xiangang,Cui Peng,Chen Huayong,&Guo Yayong.(2017).Formation conditions of outburst debris flow triggered by overtopped natural dam failure.LANDSLIDES,14(3),821-831.
MLA Jiang Xiangang,et al."Formation conditions of outburst debris flow triggered by overtopped natural dam failure".LANDSLIDES 14.3(2017):821-831.
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