| Fengtan Dam | |
| Location Map: | China |
| Coordinates: | 28.7197°N 110.2742°W |
| Country: | China |
| Location: | Zhangjiajie |
| Status: | O |
| Construction Began: | 1970 |
| Opening: | 1978 |
| Dam Type: | Arch-gravity |
| Dam Height: | 112.50NaN0 |
| Dam Length: | 4880NaN0 |
| Dam Width Base: | 65.50NaN0 |
| Dam Elevation Crest: | 211.50NaN0 |
| Dam Crosses: | You River |
| Res Capacity Total: | 17400000000NaN0 |
| Res Catchment: | 174000NaN0 |
| Res Elevation: | 2050NaN0 |
| Plant Commission: | 1978/79 2004 |
| Plant Turbines: | 4 x 100 MW 2 x 200 MW Francis-type |
| Plant Capacity: | 800 MW |
| Plant Annual Gen: | 2,043 GWh |
The Fengtan Dam is an arch-gravity dam on the You River, located 480NaN0 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 440NaN0. 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]
The Fengtan is a 112.50NaN0 tall and 4880NaN0 long (at the crest) arch-gravity dam. Its base arch length is 2000NaN0 and the dam has a curve radius of 2430NaN0. The base width of the dam is 65.50NaN0. The crest sits at an elevation of 211.50NaN0 above sea level while normal reservoir elevation is 2050NaN0. The dam sits at the head of a 174000NaN0 catchment area and withholds a reservoir with a capacity of 17400000000NaN0. 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 780NaN0 and are each supplied water via a 5.60NaN0 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]