Xinfeng Reservoir

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Xinfeng
Wanlu Reservoir
Reservoir
Reservoir
Location: Guangdong , PR China
Drain: Xinfeng Jiang → Dong Jiang
Major cities nearby: Heyuan
Xinfeng Reservoir (Guangdong)
Xinfeng Reservoir
Coordinates 23 ° 43 '37 "  N , 114 ° 39' 0"  E Coordinates: 23 ° 43 '37 "  N , 114 ° 39' 0"  E
Data on the structure
Construction time: until 1960
Height of the barrier structure : 105 m
Building volume: 0.999 million m³
Crown length: 440 m
Power plant output: 442.5 MW
Data on the reservoir
Altitude (at congestion destination ) 116  m
Water surface 370 or 461 km²dep1
Storage space 13,896 million m³
Design flood : 6017 m³ / s
The Wanlv Lake at noon.jpg

The Xinfeng Reservoir (also Xinfengjiang or Hsinfengkiang) is a large reservoir in China on the Xinfeng Jiang River (also Xinfeng He) and is located near the city of Heyuan in Guangdong . Another name for the Xinfeng Reservoir is Wanlu, English: Evergreen Lake, because the plants here in subtropical southern China are green all year round.

The lake is very scenic and has more than 360 islands. The water is of very good quality and suitable for drinking. The water surface is given in two different sources with 370 or 461 km².

Barrier structure

The barrier structure of the dam , built in 1960, is a 105 m high pier dam . In a hydropower plant , an output of 442.5 MW is achieved.

Induced seismicity

While the reservoir was dammed, there were a number of earthquakes up to a strength of 6.1  M w , which are due to the effects of the reservoir and are therefore considered to be induced seismicity .

On October 20, 1959, the filling of the reservoir began. There were several minor tremors in November. In May 1960 the water was 81 m (above sea level). Three to four earthquakes with a magnitude of 3.1 M w followed . On July 18, 90 m were reached and a 4.3 M w earthquake occurred. On March 19, 1962, when the water level reached 110.5 m, there was a 6.1 M w earthquake with the epicenter 1.1 km downstream from the dam, in which several houses were destroyed. After this earthquake, cavities under the foundation were filled with concrete for safety. This and other measures made the dam wall a calculated safety against earthquakes up to magnitude 9.5 M w .

See also

swell

  1. ↑ a b Heyuan station Xinfengjiang, ( Memento of 7 July 2011 at the Internet Archive ) in: Animal Feed Firm, access on 11 March 2011 (Chinese).
  2. ↑ Mara Hvistendahl, China's Three Gorges Dam: An Environmental Catastrophe ?, in: Scientific American, March 25, 2008, accessed November 9, 2012.

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