Naveen Ramalingam,
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Jinping-I Dam
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The
Jinping-I Dam (simplified Chinese: 锦屏一级水电站; traditional Chinese: 錦屏一級水電站) also known as the Jinping-I
Hydropower Station or Jinping 1st Cascade, is a tall arch dam on the "
Jinping Bend" of the
Yalong River (Yalong Jiang) in Liangshan, Sichuan, China. Construction on the project began in 2005 and was completed in 2014. Its power station has a 3,600 MW capacity to produce between 16 and 18 TW·h (billion kW·h) annually. Supplying the power station is a reservoir created by the
305-meter-tall arch dam, the tallest in the world. The project's objective is to supply energy for expanding industrialization and urbanization, improve flood protection, and prevent erosion.
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Top view of Jinping-I Dam
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Harnessing hydropower on the Jinping bend of the Yalong River has been in planning for decades. The length of bend is 150 km but the downstream part of the river on the opposite side is only separated by 16 km. Between that distance, there is an
elevation drop of 310 m, creating an excellent situation for hydroelectricity production. Two projects were planned for the bend, the
Jinping I and Jinping II with a combined capacity of 8,400 MW. Planning for the projects began in the 1960s under the former
Sichuan and Shanghai design institutes along with the Ministry of
Water Resources and Electric Power. They produced the "Reinvestigation Report on The Yalong River bend (Jinping)". In July 1965, the
Jinping Hydropower Engineering Headquarters was set up and designs for the Jinping 1 and Jinping 2 would progress with the East China Investigation and Design Institute.
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| Jinping-I Dam,China |
The 305m tall and
568m long arch dam supplies the power station with water from a 7.7 billion m3 reservoir, of which 4.9 billion m3 is active or usable storage. The dam itself has a structural volume of 7.4 million m3. To control flooding, the dam is equipped with a controlled spillway on its crest with four gates and the capability to discharge up to 2,993 m3/s (105,700 cu ft/s). Five bottom outlets on the dam's orifice capable of discharging 5,465 m3/s (193,000 cu ft/s) and a tunnel with a discharge capacity of 3,651 m3/s (128,900 cu ft/s) with
augment flood control as well. The power station will contain six 600 MW
Francis turbines. Water discharged from the power station is then diverted downstream by the Jinping 2 Dam to the Jinping 2
Hydropower Station.
Source :
Wikipedia
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