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Experimental investigation of failure modes and breaching characteristics of natural dams
Jiang, Xiangang1,2,3; Wei, Yunwei1,2; Wu, Lei1,2; Lei, Yu3
2018
Source PublicationGEOMATICS NATURAL HAZARDS & RISK
ISSN1947-5705
Volume9Issue:1Pages:33-48
SubtypeArticle
Contribution Rank3
AbstractThe failure mode and breaching time of a natural dam are affected by many factors. To comprehensively analyse the effects of these factors on dam failure modes, 159 runs of laboratory experiments were performed with 11 channel bed slopes, 4 dam geometric shapes, 3 construction materials, and 8 inflow rates. Through these experiments, two types of failure modes were identified. The results show that for lower permeability coefficients of the dam material, the overtopping failure mode will more likely occur. When the permeability coefficient and angle between the downstream slope and the horizontal plane are both high, slope failure occurs. When other conditions are unchanged, an increase in the channel bed slope and a decrease in the inflow discharge will result in slope failure. As the channel bed slope increases, the failure mode will change from the overtopping failure mode to the slope failure mode and back to the overtopping failure mode. A new parameter, Cig, (an abbreviation corresponding to channel, inflow, and geometric) is defined to reflect the influences of these factors on breaching time. Under the two types of failure modes, breaching time is an exponential function of the lake volume and is a power function of Cig.
KeywordNatural dam failure mode breaching time
DOI10.1080/19475705.2017.1407367
Indexed BySCI
WOS KeywordLANDSLIDE DAM ; BREAK FLOOD ; RIVER ; CHINA ; EMBANKMENTS ; FLOWS
Language英语
Funding ProjectEducation Department of Sichuan Province[16TD0006] ; National Natural Science Foundation of China[41672304] ; Open fund of Key Laboratory of mountain hazards and surface processes, Chinese Academy of Sciences[KLMHESP-17-05]
WOS Research AreaGeology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000428252700003
Funding OrganizationEducation Department of Sichuan Province ; National Natural Science Foundation of China ; Open fund of Key Laboratory of mountain hazards and surface processes, Chinese Academy of Sciences
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/22873
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorJiang, Xiangang
Affiliation1.Sichuan Agr Univ, Dept Geotech Engn, Coll Civil Engn, Chengdu, Sichuan, Peoples R China;
2.Sichuan Agr Univ, Sichuan Higher Educ Engn Res Ctr Disaster Prevent, Chengdu, Sichuan, Peoples R China;
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Dept Debris Flow, Key Lab Mt Hazards & Surface Proc, Chengdu, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Xiangang,Wei, Yunwei,Wu, Lei,et al. Experimental investigation of failure modes and breaching characteristics of natural dams[J]. GEOMATICS NATURAL HAZARDS & RISK,2018,9(1):33-48.
APA Jiang, Xiangang,Wei, Yunwei,Wu, Lei,&Lei, Yu.(2018).Experimental investigation of failure modes and breaching characteristics of natural dams.GEOMATICS NATURAL HAZARDS & RISK,9(1),33-48.
MLA Jiang, Xiangang,et al."Experimental investigation of failure modes and breaching characteristics of natural dams".GEOMATICS NATURAL HAZARDS & RISK 9.1(2018):33-48.
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