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Ertan Dam information


Flood discharge of Ertan
Ertan Dam
Ertan Dam is located in China
Ertan Dam
Location of Ertan Dam in China
Official name二灘大壩
LocationSichuan, China
Coordinates26°49′15″N 101°46′52″E / 26.82083°N 101.78111°E / 26.82083; 101.78111
StatusOperational
Construction beganSeptember 1991
Opening date26 December 1999
Owner(s)Yalong River Hydropower Development Company, Ltd.
Dam and spillways
Type of damArch
ImpoundsYalong River
Height240 m (787 ft)
Length774.7 m (2,542 ft)
Dam volume5,857,000 m3 (206,838,003 cu ft)
Spillway type7 x crest outlets, 2 x flood tunnels
Spillway capacity6,260 m3/s (221,070 cu ft/s)
Tunnels:7,400 m3/s (261,329 cu ft/s)
Reservoir
CreatesErtan Reservoir
Total capacity5,800,000,000 m3 (4,702,137 acre⋅ft)
Catchment area116,400 km2 (44,942 sq mi)
Surface area101 km2 (39 sq mi)
Power Station
Hydraulic head189 m (620 ft) (max gross)
Turbines6 × 550 MW Francis turbines
Installed capacity3,300 MW
Annual generation17 TWh

The Ertan Dam (simplified Chinese: 二滩大坝; traditional Chinese: 二灘大壩; pinyin: Èrtān Dàbà) is an arch dam on the Yalong River, a tributary of the Yangtze River in Sichuan Province, in southwest China.

The dam has six hydroelectric generators, each with a generating capacity of 550 MW. The total generating capacity of the facility is 3,300 MW, one of the largest hydroelectric stations in China. The annual production is 17 TWh, and until December 5, 2006, it has produced over 100 TWh of electricity. Construction of the dam started on September 1991 and was completed on December 26, 1999.[1][2] A total of 12,638,000 m3 (446,306,758 cu ft) of material was excavated during construction.

The Ertan Dam was designed by the China Hydropower Engineering Consulting Group Survey and Design Institute in Chengdu, and was constructed and is currently operated by Ertan Hydropower Development Company Limited, the owners of the dam. The company is invested by State Development and Investment Company (52% share) and Sichuan Chuantou Energy Limited (48% share).

General layout of Ertan hydroelectric scheme[3]
  1. ^ Ertan Hydroelectric Dam
  2. ^ "我国西部的最大水电站二滩水电站全面建成投产". Archived from the original on 2011-05-07. Retrieved 2008-02-09.
  3. ^ Cite error: The named reference :0 was invoked but never defined (see the help page).

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