Wujiangdu Dam
Encyclopedia
The Wujiangdu Dam is an arch-gravity dam
on the Wujiang River south of Zunyi
, Guizhou Province, China
. The purpose of the dam is hydroelectric power generation, flood control and navigation. The dam's power stations contain five generators for a total installed capacity of 1,130 MW.
s, two of which flank the power house and are ski-jump chute type while the other four are chutes as well and over-top the power house. The design discharge of the spillways is 18360 m3/s while the maximum is 21350 m3/s. The dam also has two flood discharge tunnels on each of its banks as well. Because the dam sits on a karst
{soluble) foundation, a deep and high pressure grout curtain
was applied, stretching 1020 m (3,346 ft) long and 200 m (656 ft) deep. The dam's power station sits at its middle base and contains the original 3 x 210 MW generators. The two additional 250 MW generators were installed in another power plant.
Arch-gravity dam
An arch-gravity dam, curved-gravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam. It is a dam that curves upstream in a narrowing curve that directs most of the water against the canyon rock walls, providing the force to compress the dam...
on the Wujiang River south of Zunyi
Zunyi
Zunyi is a prefecture-level city in Guizhou province in southwestern China. Along with Guiyang and Liupanshui, it is one of the most important cities of the province...
, Guizhou Province, China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...
. The purpose of the dam is hydroelectric power generation, flood control and navigation. The dam's power stations contain five generators for a total installed capacity of 1,130 MW.
Construction
Construction on the dam began in 1970, the first generator was operational in 1979 and the remaining original two in 1983. Two additional 250 MW generators were installed and operational between 2003 and 2004 and currently the three original 210 MW are being upgraded to 250 MW units.Design
The dam is a 165 m (541 ft) tall and 395 m (1,296 ft) long arch-gravity dam withholding a reservoir of 2300000000 cubic metre. The dam has six spillwaySpillway
A spillway is a structure used to provide the controlled release of flows from a dam or levee into a downstream area, typically being the river that was dammed. In the UK they may be known as overflow channels. Spillways release floods so that the water does not overtop and damage or even destroy...
s, two of which flank the power house and are ski-jump chute type while the other four are chutes as well and over-top the power house. The design discharge of the spillways is 18360 m3/s while the maximum is 21350 m3/s. The dam also has two flood discharge tunnels on each of its banks as well. Because the dam sits on a karst
KARST
Kilometer-square Area Radio Synthesis Telescope is a Chinese telescope project to which FAST is a forerunner. KARST is a set of large spherical reflectors on karst landforms, which are bowlshaped limestone sinkholes named after the Kras region in Slovenia and Northern Italy. It will consist of...
{soluble) foundation, a deep and high pressure grout curtain
Grout curtain
Grout curtains are barriers that protect a dam from seepage and can be used in initial construction or repair. Additionally, they can be used to strengthen foundations and contain spills.-Characteristics:...
was applied, stretching 1020 m (3,346 ft) long and 200 m (656 ft) deep. The dam's power station sits at its middle base and contains the original 3 x 210 MW generators. The two additional 250 MW generators were installed in another power plant.