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Experimental Investigation of Pressure Load Exerted on a Downstream Dam by Dam-Break Flow
Chen, H. Y.1,2; Xu, W. L.3; Deng, J.3; Xue, Y.4; Li, J.5
Corresponding AuthorW. L. Xu
AbstractThe failure of a natural or an artificial dam often leads to catastrophic flooding downstream. Studies have been conducted to investigate the mechanisms of single dam failure and the propagation of dam-break flood wave. However, little attention has been paid to the cascade failure of two or more sequential dams. In this article, consequences of a dam-break flood wave down a channel exerting pressure load on a downstream dam with different backwater effects were studied experimentally. Three typical flood patterns were observed for different downstream reservoir water depths. High precision pressure sensors were employed to measure the pressure load at different heights on the dam. Changes of the maximum pressure load were measured as the bed slope and the upstream and downstream reservoir water depths varied. An empirical formula was obtained by linear regression to predict the maximum pressure load. Additionally, a sinusoidal attenuation function was introduced to describe the time evolution of pressure load exerted on the downstream dam, and its parameters were determined using the measurement data in different cases.
KeywordDam-break Flow Attenuation Water Depth Of Reservoir Pressure Load Cascade Dams Bed Slope
Subject Area水利工程
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS Subject ExtendedEngineering ; Water Resources
Indexed BySCI
WOS SubjectEngineering, Civil ; Engineering, Mechanical ; Water Resources
WOS IDWOS:000333446600008
Funding OrganizationNational Program on Key Basic Research(2013CB035905) ; National Natural Science Foundation of China(51209195) ; Program for New Century Excellent Talents in Universities of Ministry of Education of China(NCET-10-0589)
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Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China
4.HydroChina Huadong Engn Corp, Hangzhou 310014, Zhejiang, Peoples R China
5.Sichuan Huadian Muli River Hydropower Dev Co Ltd, Xichang 610016, 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
Chen, H. Y.,Xu, W. L.,Deng, J.,et al. Experimental Investigation of Pressure Load Exerted on a Downstream Dam by Dam-Break Flow[J]. JOURNAL OF HYDRAULIC ENGINEERING,2014,140(2):199-207.
APA Chen, H. Y.,Xu, W. L.,Deng, J.,Xue, Y.,&Li, J..(2014).Experimental Investigation of Pressure Load Exerted on a Downstream Dam by Dam-Break Flow.JOURNAL OF HYDRAULIC ENGINEERING,140(2),199-207.
MLA Chen, H. Y.,et al."Experimental Investigation of Pressure Load Exerted on a Downstream Dam by Dam-Break Flow".JOURNAL OF HYDRAULIC ENGINEERING 140.2(2014):199-207.
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