Gongboxia Dam

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Gongboxia Dam
China edcp relief location map.jpg
Red pog.svg
Location of Gongboxia Dam in China
Country China
Location Longhua County, Qinghai Province
Coordinates 35°52′39″N102°13′40″E / 35.87750°N 102.22778°E / 35.87750; 102.22778 Coordinates: 35°52′39″N102°13′40″E / 35.87750°N 102.22778°E / 35.87750; 102.22778
Construction began2000
Opening date2006
Dam and spillways
Impounds Yellow River
Height132 m (433 ft)
Length429 m (1,407 ft)
Width (crest)10 m (33 ft)
Spillways 2
Spillway typeService, controlled chute
Reservoir
CreatesGongboxia Reservoir
Total capacity630,000,000 m3 (510,749 acre⋅ft)
Catchment area 143,619 km2 (55,452 sq mi)
Power Station
Installed capacity 1,500 MW
Annual generation 5.14 billion kWh

The Gongboxia Dam is a concrete face rock-fill embankment dam on the Yellow River in Longhua County, Qinghai Province, China. The dam supports a 1,500 MW hydroelectric power station.

Embankment dam large artificial dam

An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay, or rock. It has a semi-pervious waterproof natural covering for its surface and a dense, impervious core. This makes such a dam impervious to surface or seepage erosion. Such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance.

Yellow River second longest river in China

The Yellow River or Huang He is the second longest river in China, after the Yangtze River, and the sixth longest river system in the world at the estimated length of 5,464 km (3,395 mi). Originating in the Bayan Har Mountains in Qinghai province of Western China, it flows through nine provinces, and it empties into the Bohai Sea near the city of Dongying in Shandong province. The Yellow River basin has an east–west extent of about 1,900 kilometers (1,180 mi) and a north–south extent of about 1,100 km (680 mi). Its total drainage area is about 752,546 square kilometers (290,560 sq mi).

Longhua County County in Hebei, Peoples Republic of China

Longhua County is a county in the northeast of Hebei province, China, bordering Inner Mongolia to the east. It is under the administration of Chengde City.

Construction on the dam began in July 2000 by diverting the river and by August 15 the next year, the river was diverted and excavation began on the foundation. On August 1, 2002, workers began to create the embankment and by October the next year, the dam's body was almost complete. Concrete pouring on the face slab began in March 2004 and was complete by June. Filling of the reservoir began in August and in 2006 the project was complete. [1]

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References

  1. Wang Junli Wu Zengmou. "ENGINEERING CHARACTERISTICS OF CONCRETE FACED ROCKFILL DAM OF GONGBOXIA HYDROPOWER PROJECT ON THE YELLOW RIVER". Chinese National Committee on Large Dams. Archived from the original on 15 March 2012. Retrieved 8 January 2011.