5-719: Washi Dam ( 鷲ダム , Washi damu ) is a hydroelectric power Arch-gravity dam on the Kuzuryū River system in the city of Ōno in Fukui Prefecture , Japan . The dam has a height of 45 meters and is owned by the Electric Power Development Company (J-Power). It is paired with the Nagano Power Station and the Kuzuryu Dam as a Pumped-storage reservoir . Construction of the dam began in 1957; however,
10-419: The arch action . An arch-gravity dam incorporates the arch 's curved design which is effective in supporting the water in narrow, rocky locations where the gorge 's sides are of hard rock and the water is forced into a narrow channel. Therefore, the span needed for the dam is also relatively narrow, and the dam's curved design effectively holds the water back while using less construction material compared to
15-512: The spillway . A typical example of the conventional concrete dam is the Hoover Dam . Changuinola Dam is an example of the RCC arch-gravity dam. A gravity dam requires a large volume of internal fill. An arch-gravity dam can be thinner than the pure gravity dam and requires less internal fill. Arch-gravity dams are dams that resist the thrust of water by their weight using the force of gravity and
20-468: The characteristics of both an arch dam and a gravity dam . It is a dam that curves upstream in a narrowing curve that directs most of the water pressure against the canyon rock walls, providing the force to compress the dam. It combines the strengths of two common dam forms and is considered a compromise between the two. They are made of conventional concrete , roller-compacted concrete (RCC), or masonry . Arch-gravity dams are not reinforced except at
25-503: The pumped storage facility was not part of the original design and was added later at the insistence of the Ministry of International Trade and Industry . The dam was completed in 1968. This article about a dam or floodgate in Chūbu region of Honshu, Japan is a stub . You can help Misplaced Pages by expanding it . Arch-gravity dam An arch-gravity dam or arched dam is a dam with
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