Dongfeng Dam

BW

The Dongfeng Dam is an arch dam on Wu Jiang, a tributary of the Yangtze River, and is 65 km north-west of Qingzhen in the Chinese province of Guizhou. The main purpose of the dam is for hydro-electrical power; serving a 570 - MW power plant. The construction of the dam began in 1989. The first generator went into operation in 1994, the last in 1995. Generators were overhauled between 2004 and 2005, with its capacity of 170 MW was increased to 190 MW. This 2420 GWh energy can be produced per year.

Specifications

The Dongfeng - dam is a 162 m high and 254 m long parabolic curved arch dam. Their height is given in various sources, also with 168 m and 173 m. She is on her crown, 6 m wide and 25 m at its base. She stands at the end of a catchment area, which is 1816 km ². The total storage space includes 1025 million cubic meters, of which 491 million m³ of usable space. In normal traffic jam of 970 m above sea level, the reservoir contains 864 million m³.

There are several overflow and relief devices: three spillway openings on the mural crown with 2565 m³ / s performance, three medium- high passages, a spillway chute on the left bank and next to it a relief tunnel. All openings, including the power plant process can together pay 12,369 m³ / s.

The power plant is housed in a cavern on the right side of the dam. From the intake structure, the water flows through three penstocks to three Francis turbines and generators, each with 190 MW. The water is then drained through another tunnel back into the river.

The hydraulic drop height is a maximum of 132 m.