Tianhuaban Dam

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Tianhuaban Dam
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Location of Tianhuaban Dam in China
CountryChina
Location Ludian/Qiaojia Counties, Zhaotong, Yunnan Province
Coordinates 27°1′41.12″N103°17′26.67″E / 27.0280889°N 103.2907417°E / 27.0280889; 103.2907417 Coordinates: 27°1′41.12″N103°17′26.67″E / 27.0280889°N 103.2907417°E / 27.0280889; 103.2907417
PurposePower
StatusOperational
Construction began2006
Opening date2011;8 years ago (2011)
Dam and spillways
Type of dam Arch, roller-compacted concrete
Impounds Niulan River
Height113 m (371 ft)
Length160 m (520 ft)
Reservoir
Total capacity65,700,000 m3 (53,300 acre⋅ft)
Surface area2.2 km2 (0.85 sq mi)
Normal elevation1,071 m (3,514 ft)
Tianhuaban Hydropower Station
Coordinates 27°2′52.91″N103°16′28.82″E / 27.0480306°N 103.2746722°E / 27.0480306; 103.2746722
Operator(s)Yunnan Dianneng Niulan Jiang Hydropower Development Limited
Commission date2011
Type Conventional, diversion
Turbines 2 x 90 MW Francis-type
Installed capacity 180 MW

The Tianhuaban Dam is an arch dam on the Niulan River, a tributary of the Jinsha River. It straddles the border of Ludian and Qiaojia Counties in Yunnan Province, China. The primary purpose of the dam is hydroelectric power generation and it supports a 180 MW power station. In September 2006, construction on the dam's river diversion tunnels commenced. The first two of 90 MW Francis turbine-generator sets was commissioned in February 2011, the second in March of the same year. Water from the reservoir is diverted to a power station about 2.5 km (1.6 mi) downstream on the right bank of the river. [1] [2] [3]

Arch dam solid dam made of concrete that is curved upstream in plan

An arch dam is a concrete dam that is curved upstream in plan. The arch dam is designed so that the force of the water against it, known as hydrostatic pressure, presses against the arch, compressing and strengthening the structure as it pushes into its foundation or abutments. An arch dam is most suitable for narrow canyons or gorges with steep walls of stable rock to support the structure and stresses. Since they are thinner than any other dam type, they require much less construction material, making them economical and practical in remote areas.

Jinsha River river in the Peoples Republic of China

The Jinsha River is the Chinese name for the upper stretches of the Yangtze River. It flows through the provinces of Qinghai, Sichuan, and Yunnan in western China. The river passes through Tiger Leaping Gorge.

Ludian County County in Yunnan, Peoples Republic of China

Ludian County is a county under the administration of the prefecture-level city of Zhaotong, it lies in the north east of Yunnan Province, China, and shares land borders with Guizhou Province. The west and east of the county are high terrains, and the middle is low and flat. Agriculture and smelting industry make the greatest contribution to its economy.

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References

  1. "Dam Database "Tianhuaban"". Malcolm Dunstan & Associates. Archived from the original on 8 November 2015. Retrieved 7 July 2014.
  2. "Hydroelectric Power Plants in China - Yunnan". IndustCards. Archived from the original on 3 January 2013. Retrieved 7 July 2014.
  3. "Yunnan Tianhuaban Hydropower Project" (PDF). United Nations CDM. 21 February 2011. Retrieved 7 July 2014.[ permanent dead link ]
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