PKW; dam rehabilitation; energy dissipation; flood
Abstract :
[en] The 40-m high Raviege dam, built in 1957 and operated by Electricité de France (EDF), is located in South West of France, on the Agout River. The discharge capacity of the two existing gated spillways located in the center of the dam is not sufficient regarding the updated design flood. One of the solutions studied is a project combining the use of the reservoir storage capacity and a new Piano Key Weir spillway on top of the dam, beside the existing gates, aims to increase the dam safety towards floods. Scale model tests have been carried out at the Laboratory of Engineering Hydraulics of the University of Liege to optimize the PKW design and precisely characterize its discharge capacity. The scale model study also focused on the design of energy dissipation structures downstream of the PKW. This rehabilitation project is depicted in the paper, with focus on the PKW design.
Research Center/Unit :
Aquapôle - ULiège
Disciplines :
Civil engineering
Author, co-author :
Erpicum, Sébastien ; Université de Liège - ULiège > Services généraux (Faculté des sciences appliquées) > Scientifiques attachés au Doyen (Sc.appliquées)
Nagel, Véronique
Laugier, Frederic
Language :
English
Title :
Piano Key Weir design study at Raviege dam
Publication date :
2011
Event name :
1st international workshop on labyrinth and piano key weirs
Event organizer :
HACH-ULg
Event place :
Liege, Belgium
Event date :
9-11 February 2011
Audience :
International
Main work title :
Labyrinth and Piano Key Weirs - PKW 2011
Editor :
Erpicum, Sébastien ; Université de Liège - ULiège > Urban and Environmental Engineering
Laugier, Frederic
Boillat, Jean-Louis
Pirotton, Michel ; Université de Liège - ULiège > Urban and Environmental Engineering
Laugier, F. 2007. Design and construction of the first PianoKeyWeir spillway at Goulours dam. Hydropower& Dams 14(5): 94-100.
Laugier, F., Lochu, A., Gille, C., Leite Ribeiro, M. & Boillat, J-L. 2009. Design and construction of a labyrinth PKW spillway at Saint-Marc dam, France. Hydropower & Dams 16(5): 100-107.
Truong Chi, H., Huynh Thanh, S. & Ho Ta Khanh, M. 2006. Results of some piano keys weir hydraulic model tests in Vietnam. 22ème Congrès des grands barrages - Barcelona: 581-596. CIGB-ICOLD: Paris.
