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REGISTRO ITALIANO DIGHE

Ufficio Periferico di Cagliari

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Bratsk Dam

 

 

Country

Russia

River

Angara

Dam type

The barrier of the Bratsk hydroelectric station is formed by a main concrete gravity dam and by two earthfill dams on both sides of the main dam

Construction period

1955-1967

Structural height

125 m

Gross storage capacity

169,270 Mm

Active storage capacity

48,200 Mm

Volume of the dam

13,109,000 m (4,415,000 m concrete, 8,694,000 m earthfill)

Maximum controllable water surface

402.00 m a.s.l.

Crest elevation

409.50 m a.s.l.

Crest length

5,140 m (main dam: 1,430 m; right earthfill dam: 2,987 m; left earthfill dam: 723 m)

Maximum discharge capacity

Power plant rated flow: 10,960 m/s;

Radial gated spillway (10 spans, each 20 m long; threshold at el. 397.00 m a.s.l.): discharge capacity at maximum retention level (402.00 m a.s.l.) can be estimated to be about 4,700 m/s.

Nameplate capacity of the powerplant

4,500 MW (18 units, each of 250 MW), producing 22.6 TWh per year

Notes

Bratsk reservoir is the third largest man made reservoir in the world, and the largest in Russia.

Bratsk Dam power plant is exceeded in Russia, in total installed capacity, only by those of Krasnoyarsk and Sayano-Shushensk.

 

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Ultimo aggiornamento: 4 agosto 2005