Tokuyama Damtokuyama dame, tokuyama damon
The Tokuyama Dam 徳山ダム, Tokuyama damu is an embankment dam near Ibigawa, Ibi District, Gifu Prefecture in Japan The dam was completed in 2008 and will support a 153 MW hydroelectric power station that is expected to be fully operational in 2015 Currently, Unit 1 at 23 MW was commissioned in May 2014 The dam was originally intended to withhold the upper reservoir of a 400 MW pumped-storage power station until a design change in 2004 The dam is also intended for flood control and water supply It is the largest dam by structural volume in Japan and withholds the country's largest reservoir by volume as well1
- 1 History
- 2 Design
- 3 References
- 4 External links
In December 1957, Electric Power Development Company J-Power selected the Ibi River for study at the 23rd Electric Power Development Coordinating Meeting By May 1976, the Ministry of Construction released their bulletin "Policy on Tokuyama Dam Construction Project" In December 1982, the project was incorporated into the Electric Power Development Basic Plan2 It was approved by the government in 19983 The original project was a pumped-storage hydroelectric scheme which consisted of the Tokuyama Dam as the upper reservoir, the Sugihara Dam as the lower and the 400 MW Sugihara Power Plant4
Construction on the dam started in May 2000 but by May 2004 J-Power and Chubu Electric announced they had changed the design of the project due to the concerns and protests of locals and groups Instead of the pumped-storage hydroelectric scheme, only the Tokuyama Dam would be constructed with a 153 MW conventional power station Subsequently, the Sugihara Dam and Sugihara Power Plant were scrapped from the project4 During construction, the 503 m 1,650 ft long Tokunoyama Hattoku Bridge was constructed upstream With improved techniques and equipment, fill for the dam was laid at a pace of 6,200,000 m3 220,000,000 cu ft per year, enabling the dam to be constructed in 26 months Sediment from the Yokoyama Dam's reservoir was used as fill as well1 In September 2006 initial filling of the reservoir behind the Tokuyama Dam began and by June 2008, the dam was complete Filling was complete in September In October of the same year, J-Power passed oversight of the power station construction to Chubu24 The first generator, Unit 1, was commissioned on 15 May 2014 Unit 2 should be commissioned by June 20155
The Tokuyama Dam is a 4271 m 1,401 ft long and 161 m 528 ft high rock-fill embankment dam with a clay core The total structural volume of the dam is 13,700,000 m3 480,000,000 cu ft The dam creates a reservoir with a 660,000,000 m3 23×1010 cu ft capacity, surface area of 13 km2 50 sq mi and catchment area of 2545 km2 983 sq mi1 The dam will support two Francis turbine-generators, one with a 130 MW capacity which will be located in an underground power station downstream The second is an operational 23 MW generator and is located at the base of the dam The installed capacity of both will be 153 MW The power station will process a maximum of 100 m3/s 3,500 cu ft/s for power production2
- ^ a b c "The Tokuyama Dam" PDF Japan Water Agency Archived from the original PDF on 1 March 2012 Retrieved 3 October 2010
- ^ a b c "Change of Oversight of Tokuyama Power Station Plan" CHUBU Electric October 14, 2008 Retrieved 3 October 2010 dead link
- ^ "Appeal fails; largest dam, in works since '57, can be built" The Japan Times July 7, 2006 Retrieved 3 October 2010
- ^ a b c "Press Release Changes to the development project for the Tokuyama Power Plant and Sugihara Power Plant" CHUBU Electric Retrieved 3 October 2010
- ^ "20 000 kW or more of the hydroelectric power plant in the dam, the start of operation in Gifu Prefecture of underground" in Japanese ITmedia 20 May 2015 Retrieved 24 January 2015
Media related to Tokuyama Dam at Wikimedia Commons
- Chubu Electric new projects
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