Labyrinth and Piano Key Weirs III : Proceedings of the 3rd by Sébastien Erpicum, Frédéric Laugier, Michel Ho Ta Khanh,

By Sébastien Erpicum, Frédéric Laugier, Michel Ho Ta Khanh, Michael Pfister

Since the 1st implementation through Electricité de France at the Goulours dam (France) in 2006, the Piano Key Weir has develop into a a growing number of utilized approach to bring up the release ability of present spillways. In parallel, numerous new huge dam tasks were outfitted with any such flood regulate constitution, frequently together with gates. this present day, greater than 25 Piano Key Weirs are in operation or less than building around the world. greater than 15 years of analysis and improvement have enabled specified investigations of the hydraulic and structural behaviour of the Piano Key Weir complicated constitution and feature supplied increasingly more exact layout equations. Following the complaints of the 1st workshops held in Liege (Belgium – 2011) and Paris (France – 2013), Labyrinth and Piano Key Weirs III collects the contributions offered via individuals with diverse history, from researchers to practitioners, on the third overseas Workshop on Labyrinth and Piano Key Weirs - PKW 2017 (22-24 February 2017, Qui Nhon, Vietnam). The papers, reviewed and approved via a world clinical Committee, summarize the present cutting-edge on Piano Key Weirs from a theoretical to a pragmatic standpoint, and current lots of the major tasks in operation or lower than development.

Labyrinth and Piano Key Weirs III is hence a reference for college kids, practitioners and researchers drawn to Dams Engineering.

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Extra info for Labyrinth and Piano Key Weirs III : Proceedings of the 3rd International Workshop on Labyrinth and Piano Key Weirs (PKW 2017), February 22-24, 2017, Qui Nhon, Vietnam

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Ouamane, A. 2011. Contribution to the study of the Piano Key weir submerged by the downstream level. Labyrinth and Piano Key Weirs – PKW 2011: 89–96. CRC Press: Leiden. , Faramond, L. & Delorme, F. 2011. Energy dissipation downstream of Piano Key Weirs – Case study of Gloriettes Dam (France), Labyrinth and piano key weirs – PKW 2011: 123–130. CRC press, London. Blanc, P. & Lempérière, F. 2001. Labyrinth spillways have a promising future. Hydropower & Dams. 8(4):129–131. Booyse, D. 2017. The raising of Hazelmere Dam by means of Piano Key Weir.

Sekkour E. 2016. Contribution à l’étude des déversoirs auto-stables. Mémoire de Magister. Université de Biskra, Algérie. 26 Labyrinth and Piano Key Weirs III – PKW 2017 – Erpicum et al. (Eds) © 2017 Taylor & Francis Group, London, ISBN 978-1-138-05010-5 Hydraulics of Piano Key Weirs: A review S. Erpicum, P. Archambeau, B. Dewals & M. Pirotton Research Group of Hydraulics in Environmental and Civil Engineering (HECE), University of Liège (ULg), Belgium ABSTRACT: The Piano Key Weir (PKW) is a rectangular-labyrinth-type weir that utilizes cantilevered apexes in order to maximize the allowable weir length that can fit in a given spillway channel width, while reducing the required structural footprint.

These studies were focused on the geometry of the labyrinth and the various types of flow. These studies focused in particular on the geometry of labyrinth weirs (curvilinear weir, arrangement of the cycles, number of cycles, and influence of the corner on the flow of a triangular labyrinth weir …) and on the approach flow conditions. Practical project have also been studied, such as the labyrinth weir of The Fontaine des Gazelles dam (Biskra, Algeria) (Ouamane, 1997). 3 PKW BASIC DESIGN The second period (2000–2003) has been the subject of intensive study for the development of a new type of labyrinth weir (Lempérière & Ouamane, 2003), (Ouamane, 2005), (Ouamane & Lempérière, 2006a), (Ouamane & Lempérière, 2006c), (Ouamane, 2006d).

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