", "NASA Details Earthquake Effects on the Earth", "39.1931, 1935, 1954, 1998 年长江流域发生的4次大洪水造成了怎样的洪水灾害?? Watch later. The generator produces electrical power at 20 kV. Each of them is made up of five stages, with transit time at around four hours. The report said the towers had reached 189 m (620 ft) of the anticipated 195 m (640 ft), the towers would be completed by June 2012 and the entire shiplift in 2015. Many other fish are injured in the turbine blades of the hydroelectric plants as well. Concerns about the potential wildlife impact of the dam predate the National People's Congress's approval in 1992. [48], The first north side main generator (No. In a rare revelation, Beijing has admitted that its 2.4-kilometer Three Gorges Dam spanning the Yangtze River in Hubei province “deformed slightly” after record flooding. [109][110], The installation of ship locks is intended to increase river shipping from ten million to 100 million tonnes annually; as a result transportation costs will be cut between 30 and 37%. The DC transmission line HVDC Three Gorges – Guangdong to the South China Grid has a capacity of 3,000 MW. The official Xinhua News Agency quoted the operator of the the world’s largest hydroelectric gravity dam as saying that some nonstructural, peripheral parts of the dam had buckled. The moving mass (including counterweights) is 34,000 tonnes. After the 1954 Yangtze River Floods, in 1956, Mao Zedong authored "Swimming", a poem about his fascination with a dam on the Yangtze River. [106] This increases the flow rate of the river downstream, and provides fresh water for agricultural and industrial usage. 17) began operation on December 18, 2007, raising capacity to 14.1 GW, finally surpassing Itaipu dam (14.0 GW), to become the world's largest hydro power plant by capacity. The flood affected more than 2.3 million people, killing 1,526. The Three Gorges Dam is the world's largest capacity hydroelectric power station with 34 generators: 32 main generators, each with a capacity of 700 MW, and two plant power generators, each with capacity of 50 MW, making a total capacity of 22,500 MW. TRENDING: Photo Appears to Show Black Lives Matter Supporters Holding Down and Kneeling on Neck of White Baby. [85] Because the flow is slower above the dam, much of this sediment will now settle there instead of flowing downstream, and there will be less sediment downstream. Construction was completed in December 2007, one year ahead of schedule. The country already is a net food importer. September 7, 2020 by IWB. [82] Plenty of farm land and China's most important industrial area are built beside the river. It would affect the Grand Canal systems and so spill over into the Yellow River Region. [133], Relocation was completed on July 22, 2008. [30] Some exploration, survey, economic study, and design work was done, but the government, in the midst of the Chinese Civil War, halted work in 1947. As a result, damage to an individual section should not affect other parts of the dam. On completion, the reservoir flooded a total area of 632 km2 (244 sq mi) of land, compared to the 1,350 km2 (520 sq mi) of reservoir created by the Itaipu Dam. [32][33] Construction started on December 14, 1994. appId : "", As many as 400 million lives may be at risk as torrential rain in China threatens the world’s largest dam. After the 1949 Communist Revolution, Mao Zedong supported the project, but began the Gezhouba Dam project nearby first, and economic problems including the Great Leap Forward and the Cultural Revolution slowed progress. In fact, Chinese Government scholars even claim that the Three Gorges Dam directly caused the extinction of the baiji. [citation needed]. As of May 2014, the ship lift was expected to be completed by July 2015. [15][54][55], By August 16, 2011, the plant had generated 500 TWh of electricity. The ship locks are to the right (northeast) of the ship lift. China finally admits Its Three Gorges Dam has ‘deformed slightly’ but claims it happened over the weekend, ignoring reports this happened long ago. 27, finished its final test, the six underground main generators are also in operation, raising capacity to 22.5 GW. [139] Cultural and historical relics are being moved to higher ground as they are discovered, but the flooding inevitably covered undiscovered relics. Three direct current (DC) lines to the East China Grid carry 7,200 MW: Three Gorges – Shanghai (3,000 MW), HVDC Three Gorges – Changzhou (3,000 MW), and HVDC Gezhouba – Shanghai (1,200 MW). [16][36] The dam had raised the water level in the reservoir to 172.5 m (566 ft) above sea level by the end of 2008 and the designed maximum level of 175 m (574 ft) by October 2010.[37][38]. The dam discharges its reservoir during the dry season between December and March every year. To heavy flooding power generation record in 2020 China.org.cn 01:34 2-Jan-21 2020 China.org.cn 2-Jan-21. Lift can lift ships of up to power, stand up to ~400 people... July 22, 2008 Japanese military forces occupied yichang and surveyed the area 22 cubic kilometres ( 5.3 mi..., Relocation was completed on July 22, 2008 [ 106 ] this increases flow. Central China Grid has a capacity of 3,000 MW Relocation was completed in 2015 plant fully... Over China few weeks since 2012 [ 21 ] Because of that, the dam the... Stagnant, polluted and murky guaranteed to be `` negatively affected '' by the dam is the... 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