Longshou II Dam

Longshou II Dam
Location of Longshou II Dam in China
Country China
Location Zhangye
Coordinates 38°45′24″N 100°06′03″E / 38.75667°N 100.10083°E / 38.75667; 100.10083Coordinates: 38°45′24″N 100°06′03″E / 38.75667°N 100.10083°E / 38.75667; 100.10083
Status Operational
Construction began 2002
Opening date 2004
Construction cost $153 million USD
Owner(s) Gansu Hexi Hydropower Development Investment Co., Ltd.
Dam and spillways
Type of dam Embankment, concrete-face rock-fill
Impounds Heihe River
Height 146.5 m (481 ft)
Length 191 m (627 ft)
Elevation at crest 1,924.5 m (6,314 ft)
Dam volume 2,530,000 m3 (3,309,115 cu yd)
Spillway type Controlled chute
Spillway capacity 2,696 m3/s (95,208 cu ft/s)
Reservoir
Total capacity 86,200,000 m3 (69,883 acre·ft)[1]
Normal elevation 1,920 m (6,299 ft)
Power station
Commission date 2004
Turbines 3 x 45 MW
1 x 22 MW
Francis-type[2]
Installed capacity 157 MW
Annual generation 528 GWh

The Longshou II Dam, also referred to as Longshou No. 2, is a concrete-face rock-fill dam on the Heihe River, located 35 km (22 mi) southwest of Zhangye in Gansu Province, China. It is part of the Gansu Heihe Rural Hydropower Development and supports a 157 MW power station.[3] The dam's first feasibility study was carried out in 2000 and river diversion construction began in December 2001. In June 2002, the river was diverted and in September that year, filling of the dam's body began. On 17 August 2004, the first generator was operational with the rest by the end of the year. The 146.5 m (481 ft) high dam withholds a reservoir with a capacity of 86,200,000 m3 (69,883 acre·ft). It's spillway is located on the right bank and is a controlled chute type with a discharge capacity of 2,696 m3/s (95,208 cu ft/s).[4] Water is delivered to the dam's power station downstream via a 1.7 km (1 mi) long tunnel.[5] The dam is located upstream of the Longshou I Dam, an 80 m (262 ft) tall double-curvature arch dam with an installed capacity of 52 MW.[6] Upstream is the Xiaogushan Dam, a gravity dam which diverts water to a 102 MW power station.[3]

See also

References

  1. ↑ "China's highest CFRDs". Chinese National Committee on Large Dams. Retrieved 4 September 2011.
  2. ↑ "Long's first two (West water) hydroelectric turbine energy characteristics of test" (in Chinese). Senior Engineer Online. Retrieved 4 September 2011.
  3. 1 2 "People's Republic of China: Gansu Heihe Rural Hydropower Development Investment Program: Dagushan Hydropower Project" (PDF). Asian Development Bank. April 2007. Retrieved 4 September 2011.
  4. ↑ "Longshou Two Hydropower" (in Chinese). State Electricity Regulatory Commission Dam Safety Supervision Center. Retrieved 4 September 2011.
  5. ↑ "Gansu: Long Heihe Hydropower first unit the first two grid" (in Chinese). Gansu Provincial Department of Housing and Urban-Rural Development. Retrieved 4 September 2011.
  6. ↑ ...], edited by L. Berga ... [Organised by Spanish National Committee on Large Dams - SPANCOLD (2003). Roller compacted concrete dams : proceedings of the IV International Symposium on Roller Compacted Concrete (RCC) Dams, 17-19 November 2003, Madrid, Spain. Rotterdam [u.a.]: Balkema. p. 373. ISBN 90-5809-564-9.
This article is issued from Wikipedia - version of the 10/28/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.