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The Ertan Dam () is an arch dam on the Yalong River, a tributary of the Yangtze River in Sichuan Province, southwest 我国西部的最大水电站二滩水电站全面建成投产
/ref> A total of 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).
The Ertan Dam () is an arch dam on the Yalong River, a tributary of the Yangtze River in Sichuan Province, southwest China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
.
The dam has six hydroelectric
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...
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./ref> A total of 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).
Design
The Ertan Dam is a high and long double-curvature arch dam. The dam withholds a normal reservoir of with a drainage area of and normal surface area of . The dam has four different ways to discharge water downstream. First, the dam's spillway's which contain 7 x floodgates at the crest and two flood tunnels can discharge and respectively. The dam also contains 6 x middle outlets and 4 x bottom outlets that can discharge and respectively. The dam's power station is located underground along with its transformer room which is in a separate cavern. Additionally, the power station is supported by an underground surge chamber as well.See also
* List of conventional hydroelectric power stations * List of power stations in ChinaReferences
{{stack, {{Portal, China, Water, Renewable energy Hydroelectric power stations in Sichuan Dams in China Dams completed in 1999 Dams on the Yalong River Arch dams 1999 establishments in China