Maoergai Dam

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Maoergai Dam
China edcp relief location map.jpg
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Location of Maoergai Dam in China
CountryChina
Location Mao County, Ngawa Prefecture, Sichuan
Coordinates 32°4′23.03″N103°13′44.56″E / 32.0730639°N 103.2290444°E / 32.0730639; 103.2290444 Coordinates: 32°4′23.03″N103°13′44.56″E / 32.0730639°N 103.2290444°E / 32.0730639; 103.2290444
Purpose Power
StatusOperational
Construction began2006
Opening date2011;8 years ago (2011)
Dam and spillways
Type of dam Embankment, rock-fill
Impounds Heishui River
Height147 m (482 ft)
Elevation at crest2,138 m (7,014 ft)
Width (crest)12 m (39 ft)
Reservoir
Total capacity535,000,000 m3 (434,000 acre⋅ft)
Maoergai Hydropower Station
Coordinates 31°58′54.90″N103°20′7.69″E / 31.9819167°N 103.3354694°E / 31.9819167; 103.3354694
Commission date2011
Type Conventional
Hydraulic head 168 m (551 ft)
Turbines 3 x 140 MW Francis-type
Installed capacity 420 MW

The Maoergai Dam is a rock-filled embankment dam on the Heishui River in Mao County of Sichuan Province, China. The primary purpose of the dam is hydroelectric power production and it supports a 420 MW power station. Preliminary construction (roads, bridges and foundation) for the dam began in 2006 while construction on the dam and power station commenced in 2008. The generators were commissioned in 2011. [1] To produce power, water from the reservoir is diverted to a power station downstream through a 16.15 km (10.04 mi) long headrace tunnel and penstock. The difference in elevation between the reservoir and power station affords a hydraulic head (water drop) of 168 m (551 ft). The dam sits just below the headwaters of the Heishui and water discharged through its power station regulates the flow of water for smaller power stations downstream. [2] [3]

Embankment dam large artificial dam

An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay, or rock. It has a semi-pervious waterproof natural covering for its surface and a dense, impervious core. This makes such a dam impervious to surface or seepage erosion. Such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance.

Mao County County in Sichuan, Peoples Republic of China

Mao County or Maoxian is a county in Ngawa Prefecture, Sichuan Province, China.

China Country in East Asia

China, officially the People's Republic of China (PRC), is a country in East Asia and the world's most populous country, with a population of around 1.404 billion in 2017. Covering approximately 9,600,000 square kilometers (3,700,000 sq mi), it is the third or fourth largest country by total area. Governed by the Communist Party of China, the state exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities, and the special administrative regions of Hong Kong and Macau.

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References

  1. "Maoergai Hydropower first generating unit (毛尔盖水电站首台机组发电)" (in Chinese). Jiuzhaigou. 28 October 2011. Archived from the original on 12 May 2012. Retrieved 2 July 2014.
  2. "Scheme of water diversion system Maoergai hydropower charge" (in Chinese). Sichuan Hydropower. 2013. Retrieved 2 July 2014.
  3. "Maoergai Dam hydropower station 2138m elevation Adit II grout curtain grouting construction tenders" (in Chinese). State Bidding Corp. 8 January 2013. Archived from the original on 28 March 2013. Retrieved 2 July 2014.
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