A review of Piano Key Weir as a superior alternative for dam rehabilitation

被引：16
作者：
Abhash A. [1 ]
Pandey K.K. [1 ]
机构：
[1] Department of Civil Engineering, Indian Institute of Technology (BHU), Varanasi
来源：
ISH Journal of Hydraulic Engineering | 2022年 / 28卷 / S1期
关键词：
dam rehabilitation; discharge capacity; economy; Flood; Piano Key Weir (PKW);
D O I：
10.1080/09715010.2020.1767516
中图分类号：
学科分类号：
摘要：
Dams fall in ‘installations containing dangerous forces’ because of their massive impact on the environment and civilian life and property as per International humanitarian law. As such, it becomes vital for hydraulic engineers to refurbish various solutions for dam rehabilitation. This paper presents a review of a new type of weir installation called Piano Key Weir (PKW), which is becoming popular around the world for its higher spillway capacity both for existing and new dam spillway installations. This paper reviews the geometry along with structural integrity, discharging capacity, economic aspects, aeration requirements, sediment transport and erosion aspects of Piano Key Weir (PKW) as compared with other traditional spillway structures and alternatives from literature. The comparison with other alternatives shows PKW to be an excellent alternative for dam risk mitigation owing to its high spillway capabilities and economy, along with its use in both existing and new hydraulic structures. © 2020 Indian Society for Hydraulics.
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页码：541 / 551
页数：10
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