Hydraulic Design of Stepped Spillways and Downstream Energy Dissipators for Embankment Dams

Gonzalez, Carlos A. and Chanson, Hubert (2007) Hydraulic Design of Stepped Spillways and Downstream Energy Dissipators for Embankment Dams. Dam Engineering, 17 4: 223-244.

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Author Gonzalez, Carlos A.
Chanson, Hubert
Title Hydraulic Design of Stepped Spillways and Downstream Energy Dissipators for Embankment Dams
Journal name Dam Engineering
ISSN 0186-4076
Publication date 2007-03-01
Year available 2007
Sub-type Article (original research)
Volume 17
Issue 4
Start page 223
End page 244
Total pages 22
Editor A. A. A. Rodrigue
Place of publication Sutton, England
Publisher Reed Business Publishing
Collection year 2008
Language eng
Subject 290000 Engineering and Technology
290800 Civil Engineering
290802 Water and Sanitary Engineering
291100 Environmental Engineering
291103 Environmental Engineering Design
291800 Interdisciplinary Engineering
291803 Turbulent Flows
300000 Agricultural, Veterinary and Environmental Sciences
300100 Soil and Water Sciences
300105 Applied Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
C3
770400 Coastal and Estuarine Environment
Abstract In recent years, the design flows of many dams were re-evaluated, often resulting in discharges larger than the original design. In many cases, the occurrence of the revised flows could result in dam overtopping because of insufficient storage and spillway capacity. An experimental study was conducted herein to gain a better understanding of the flow properties in stepped chutes with slopes typical of embankment dams. The work was based upon a Froude similitude in large-size experimental facilities. A total of 10 configurations were tested including smooth steps, steps equipped with devices to enhance energy dissipation and rough steps. The present results yield a new design procedure. The design method includes some key issues not foreseen in prior studies : e.g., gradually varied flow, type of flow regime, flow resistance. It is believed that the outcomes are valid for a wide range of chute geometry and flow conditions typical of embankment chutes.
Keyword stepped spillways
energy dissipation
hydraulic design
flow resistance
air entrainment
embankment dams
skimming flows
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Q-Index Code C3
Additional Notes The full bibliographic details are : GONZALEZ, C.A., and CHANSON, H. (2007). "Hydraulic Design of Stepped Spillways and Downstream Energy Dissipators for Embankment Dams." Dam Engineering, Vol. 17, No. 4, pp. 223-244 (ISSN 0 617 00563 X).

 
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Created: Fri, 13 Apr 2007, 13:12:36 EST by Hubert Chanson on behalf of School of Engineering