Fengtan Dam

Fengtan Dam
Location of Fengtan Dam in China
Country China
Location Zhangjiajie
Coordinates 28°43′11″N 110°16′27″E / 28.71972°N 110.27417°E / 28.71972; 110.27417Coordinates: 28°43′11″N 110°16′27″E / 28.71972°N 110.27417°E / 28.71972; 110.27417
Status Operational
Construction began 1970
Opening date 1978
Dam and spillways
Type of dam Arch-gravity
Impounds You River
Height 112.5 m (369 ft)
Length 488 m (1,601 ft)
Elevation at crest 211.5 m (694 ft)
Width (base) 65.5 m (215 ft)
Reservoir
Total capacity 1,740,000,000 m3 (1,410,641 acre·ft)
Catchment area 17,400 km2 (6,718 sq mi)
Normal elevation 205 m (673 ft)
Power station
Commission date 1978/79
2004
Turbines 4 x 100 MW
2 x 200 MW
Francis-type
Installed capacity 800 MW
Annual generation 2,043 GWh

The Fengtan Dam is an arch-gravity dam on the You River, located 48 km (30 mi) southeast of Zhangjiajie in Hunan Province, China. The purpose of the multi-purpose dam is flood control, irrigation, power generation and navigation. The dam has a power station with an installed capacity of 800 MW and provides water for the irrigation of 44 km2 (17 sq mi). Construction on the dam began in 1970 and the first generator was operational in 1978. All four of the original generators were operational by 1979.[1] A power plant expansion project began in 2001 and in 2004 two additional 200 MW generators were commissioned.[2][3]

Design

The Fengtan is a 112.5 m (369 ft) tall and 488 m (1,601 ft) long (at the crest) arch-gravity dam. Its base arch length is 200 m (656 ft) and the dam has a curve radius of 243 m (797 ft). The base width of the dam is 65.5 m (215 ft). The crest sits at an elevation of 211.5 m (694 ft) above sea level while normal reservoir elevation is 205 m (673 ft). The dam sits at the head of a 17,400 km2 (6,718 sq mi) catchment area and withholds a reservoir with a capacity of 1,740,000,000 m3 (1,410,641 acre·ft). The dam's spillway is located on its downstream face and consists of 13 chutes controlled by radial gates. Six of the chutes have their flip buckets mid-way on the face of the dam while the seven others are on the lower portion. The original power house is located within the left side of the dam near the abutment and contains four 100 MW Francis turbine-generators. The turbines are afforded a rated hydraulic head of 78 m (256 ft) and are each supplied water via a 5.6 m (18 ft) diameter penstock. On the dam's right bank, there is a 50-ton boat lift which is also used to move lumber as well.[4][5]

See also

References

  1. ↑ "Fengtan HPP". HYDROCHINA ZHONGNAN. Retrieved 3 September 2011.
  2. ↑ "About Fengtan power plant" (in Chinese). Yuanling News. Retrieved 3 September 2011.
  3. ↑ "First Generator of Fengtan Expansion Project Begins Operation.". Alestron. 25 May 2004. Retrieved 3 September 2011.
  4. ↑ "Feng Hydropower Station" (in Chinese). China Water Conservancy and Hydropower Research. Retrieved 3 September 2011.
  5. ↑ "Feng Hydropower Station" (in Chinese). China Water. Retrieved 3 September 2011.
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