The Shiyazi Dam is a concrete gravity dam on the Hongjiadu River, a tributary of the Wu River, in Wuchuan County, Guizhou Province, China. The primary purpose of the dam is hydroelectric power generation. Construction on the dam began in 2007 and concrete pouring in April 2008. The reservoir began to impound in September 2010. The dam was "capped off" with concrete on 24 December 2011 and the generators were commissioned a week later on 31 December. The dam, being located in a steep portion of Meilin Canyon, was difficult to construct.[2][3][4][5] The 134.5 m (441 ft) tall dam withholds a reservoir with a capacity of 321,500,000 m3 (260,644 acre⋅ft) and was constructed with both normal concrete and roller-compacted concrete. The dams power station is located 320 m (1,050 ft) downstream and contains two 70 MW Francis turbine-generators for an installed capacity of 140 MW.[6][7]

Shiyazi Dam
Shiyazi Dam is located in China
Shiyazi Dam
Location of Shiyazi Dam in China
Official name石垭子水电站
CountryChina
LocationWuchuan County
Coordinates28°39′07″N 107°58′05″E / 28.65194°N 107.96806°E / 28.65194; 107.96806
StatusOperational
Construction began2007
Opening date2010
Owner(s)Guizhou Zhongshui Energy Co., Ltd
Dam and spillways
Type of damConcrete gravity
ImpoundsHongjiadu River
Height134.5 m (441 ft)
Elevation at crest547 m (1,795 ft)
Width (crest)7 m (23 ft)
Width (base)28 m (92 ft)
Reservoir
Total capacity321,500,000 m3 (260,644 acre⋅ft)
Catchment area2,589 km2 (1,000 sq mi)
Surface area8 km2 (3 sq mi)[1]
Normal elevation544 m (1,785 ft)
Power Station
Commission date2010
Turbines2 x 70 MW Francis-type
Installed capacity140 MW
Annual generation478 GWh

See also

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References

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  1. ^ "Shiyazhi Hydro power Project in Guizhou Province Chin". UN Clean Development Mechanism. 22 January 2010. Retrieved 4 September 2011.
  2. ^ "Hong Shiyazi crossing station put into operation" (in Chinese). China Water Conservancy and Hydropower Engineering Bureau. 18 January 2011. Retrieved 4 September 2011.
  3. ^ "Shiyazi hydropower station project". HydroChina International Engineering Co. Archived from the original on 31 March 2012. Retrieved 4 September 2011.
  4. ^ "The construction of China's hydropower station in Guizhou Shiyazi success started to store water" (in Chinese). Gerun News. 8 September 2010. Archived from the original on 23 January 2013. Retrieved 4 September 2011.
  5. ^ "Governor of Guizhou Lin Shusen Shiyazi inspection station" (in Chinese). Polaris Electricity Network. 30 June 2008. Retrieved 4 September 2011.
  6. ^ "China's highest Concrete Gravity Dams". Chinese National Committee on Large Dams. Retrieved 4 September 2011.
  7. ^ "Shiyazi Hydropower Station crossing into operation sub-station" (in Chinese). SINOHYDRO. Retrieved 6 January 2012.