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Selection of empirical formulae for design of stepped spillways on RCC dams

Sarfaraz, M ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1061/41173(414)260
  3. Publisher: 2011
  4. Abstract:
  5. Stepped spillways have been widely used in Roller Compacted Concrete (RCC) dams in the recent decades. Considering complexity of hydraulics of stepped chutes, their initial design involves pre-selection of some empirical formulae for calculation of flow characteristics and design parameters. In this paper, accuracy of several empirical formulae, proposed for calculating locations of aeration inception (LI), uniform flow (Lu) and rate of energy dissipation (ΔH/Hmax), were compared in relation to results of physical model tests of four stepped spillways and the preferred formulae, providing least amounts of relative errors, were identified. Such a feedback will be helpful for improvement of initial design and subsequent physical modeling of similar stepped spillways in future
  6. Keywords:
  7. Dams ; Hydraulic structures ; Design parameters ; Empirical formulas ; Flow characteristic ; Initial design ; Physical model test ; Physical modeling ; Pre-selection ; RCC dams ; Relative errors ; Roller compacted concrete dams ; Stepped chutes ; Stepped spillways ; Uniform flow ; Bearings (structural) ; Concrete dams ; Electron energy loss spectroscopy ; Energy dissipators ; Hydraulics ; Models ; Spillways ; Sustainable development ; Water resources ; Design
  8. Source: World Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability - Proceedings of the 2011 World Environmental and Water Resources Congress, 22 May 2011 through 26 May 2011 ; May , 2011 , Pages 2508-2517 ; 9780784411735 (ISBN)
  9. URL: http://ascelibrary.org/doi/abs/10.1061/41173%28414%29260