Hydraulics of stepped weirs and dam spillways: engineering challenges, labyrinths of research

Matos, J. and Meireles, I. (2014). Hydraulics of stepped weirs and dam spillways: engineering challenges, labyrinths of research. In: Hubert Chanson and Luke Toombes, Hydraulic structures and society - Engineering challenges and extremes. 5th IAHR International Symposium on Hydraulic Structures, Brisbane, Australia, (1-30). 25-27 June 2014. doi:10.14264/uql.2014.11

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Author Matos, J.
Meireles, I.
Title of paper Hydraulics of stepped weirs and dam spillways: engineering challenges, labyrinths of research
Conference name 5th IAHR International Symposium on Hydraulic Structures
Conference location Brisbane, Australia
Conference dates 25-27 June 2014
Proceedings title Hydraulic structures and society - Engineering challenges and extremes
Journal name ISHS 2014 - Hydraulic Structures and Society - Engineering Challenges and Extremes: Proceedings of the 5th IAHR International Symposium on Hydraulic Structures
Place of Publication Brisbane, Australia
Publisher The University of Queensland
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.14264/uql.2014.11
Open Access Status DOI
ISBN 9781742721156
Editor Hubert Chanson
Luke Toombes
Start page 1
End page 30
Total pages 30
Language eng
Abstract/Summary Stepped weirs and dam spillways have been increasingly used for handling flood releases, due to their inherent benefits, particularly those related to energy dissipation. Among the diversity of construction techniques for which a stepped chute turns out to be an attractive solution, the popularity of roller compacted concrete placement on new and rehabilitated dams has prompted interest in researching the hydraulics of stepped spillways, for medium to large unit discharges. In this paper, some main applications of stepped chutes are briefly described, with a particular focus on recent engineering challenges on spillways over concrete gravity or RCC dams, questions raised and some answers proposed. Some peculiar, eventually paradoxical aspects of the non-aerated and self-aerated skimming flows on steeply sloping chutes are addressed, in light of the self-aerated flow on smooth spillways. Later, a brief review of possible future research topics in this captivating field of research is included.
Keyword Stepped spillways
Hydraulic modelling
Skimming flow
Cavitation
Air entrainment
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

 
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Created: Mon, 12 May 2014, 15:13:19 EST by Anthony Yeates on behalf of Scholarly Communication and Digitisation Service