3 gorges dam collapse

This is largely due to China's large reforestation effort. The deformation occurred last Saturday when the flood from western provinces including Sichuan and Chongqing along the upper reaches of the Yangtze River peaked at a record-setting 61,000 cubic meters per second, according to China Three Gorges Corporation, a state-owned enterprise that manages the dam and the sprawling power plant underneath it. 22 began operation on June 11, 2007, and No. 15 started up on October 30, 2008. [126] The 95-kilometre (59 mi) long southern portage railway (南岸翻坝铁路) will run from Maoping (upstream of the dam) via Yichang South Railway Station to Zhicheng (on the Jiaozuo–Liuzhou Railway). [96] Other aquatic species have been endangered by the dam, particularly the baiji, or Chinese river dolphin,[85] now extinct. [99], In 2005, NASA scientists calculated that the shift of water mass stored by the dams would increase the total length of the Earth's day by 0.06 microseconds and make the Earth slightly more round in the middle and flat on the poles.[100]. This means that in order to generate power at 50 Hz, the generator rotors have 80 poles. Annual electricity generation in 2018 was 101.6 TWh,[7] which is 20 times more than the Hoover Dam. That is not counting the economic losses that China can suffer. [71] During an August 2009 flood, the plant first reached its maximum output for a short period. It is home to 6,388 species of plants, which belong to 238 families and 1,508 genera. "[142], The Three Gorges Dam is a steel-concrete gravity dam. What happens if it does? The dam could only divert the water above Chenglingji, leaving 30 to 40 km3 (7.2 to 9.6 cu mi) to be diverted. Foremost among them was hydrologist Huang Wangli, who was a target of the CCP (Chinese Communist Party) because of his unwillingness to align with Party policies. [137], Allegedly, funds for relocating 13,000 farmers around Gaoyang disappeared after being sent to the local government, leaving residents without compensation. [91] Over one billion tons of wastewater are released annually into the river,[85] which was more likely to be swept away before the reservoir was created. [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. js = d.createElement(s); js.id = id; [10] After nine years of construction, installation and testing, the power plant was fully operational by July 2012. The original plans called for the dam to employ a unique method for moving ships: the ships would enter locks located at the lower and upper ends of the dam and then cranes would move the ships from one lock to the next. [127], Though the large size of the reservoir caused huge relocation upstream, it was considered justified by the flood protection it provides for communities downstream. The flood affected more than 2.3 million people, killing 1,526. The water is held back by the innate mass of the individual dam sections. The dam was a pet project of the late Premier Li Peng and a monumental pride of the nation when it blocked and diverted Asia’s largest river in 1997. Shopping. xfbml : true, // parse social plugins on this page Earthfill south dam in foreground with view along main dam. Concerns about the potential wildlife impact of the dam predate the National People's Congress's approval in 1992. The reservoir submerged two cities, … Full cost recovery was thus expected to occur ten years after the dam started full operation,[41] but the full cost of the Three Gorges Dam was recovered by December 20, 2013. The region also provides habitats to hundreds of freshwater and terrestrial animal species. At current levels, 80% of the land in the area is experiencing erosion, depositing about 40 million tons of sediment into the Yangtze annually. [134][135][136] It would affect the Grand Canal systems and so spill over into the Yellow River Region. The company noted that parts of the dam had “deformed slightly,” displacing some external structures, and seepage into the main outlet walls had also been reported throughout the 18 hours on Saturday and Sunday when water was discharged though its outlets. (function(d, s, id) { Some sites could not be moved because of their location, size, or design. Some newer ones are air-cooled, which are simpler in design and manufacture and are easier to maintain. js.src = "https://connect.facebook.net/en_US/sdk.js"; [39] The concrete dam wall is 181 m (594 ft) high above the rock basis. In November 2007, it was reported in the local media that construction of the ship lift started in October 2007. and bang up to date video. Some hydrologists expect downstream riverbanks to become more vulnerable to flooding. The country already is a net food importer. All other rights are reserved for The Spectator Media, unless otherwise noted. The DC transmission line HVDC Three Gorges – Guangdong to the South China Grid has a capacity of 3,000 MW. [117], The ship lift was not yet complete when the rest of the project was officially opened on May 20, 2006. if (d.getElementById(id)) return; Of these plant species, 57 percent are endangered. Other provinces had to pay an additional charge of ¥4.00 per MWh. Two hazards are uniquely identified with the dam. The flow rate varies between 600–950 cubic metres per second (21,000–34,000 cu ft/s) depending on the head available. [31], During the 1980s, the idea of a dam reemerged. [139] Cultural and historical relics are being moved to higher ground as they are discovered, but the flooding inevitably covered undiscovered relics. [82] Since then, the price has varied by province, from ¥228.7–401.8 per MWh. The 88-kilometre (55 mi) long northern portage railway (北岸翻坝铁路) will run from the Taipingxi port facility (太平溪港) on the northern side of the Yangtze, just upstream from the dam, via Yichang East Railway Station to the Baiyang Tianjiahe port facility in Baiyang Town (白洋镇), below Yichang. Tap to unmute. 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. [94] These rare species are also used as ingredients in traditional Chinese medicines. Three Gorges Dam Collapse - The Exact Simulation - YouTube. [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]. [43], Funding sources include the Three Gorges Dam Construction Fund, profits from the Gezhouba Dam, loans from the China Development Bank, loans from domestic and foreign commercial banks, corporate bonds, and revenue from both before and after the dam is fully operational. [95] Already, the percentage of forested area in the region surrounding the Three Gorges Dam has dropped from twenty percent in 1950 to less than ten percent as of 2002,[95] negatively affecting all plant species in this locality. var js, fjs = d.getElementsByTagName(s)[0]; The absence of silt downstream has three effects: Erosion in the reservoir, induced by rising water, causes frequent major landslides that have led to noticeable disturbance in the reservoir surface, including two incidents in May 2009 when somewhere between 20,000 and 50,000 cubic metres (26,000 and 65,000 cu yd) of material plunged into the flooded Wuxia Gorge of the Wu River. The ship lift takes 30 to 40 minutes to transit, as opposed to the three to four hours for stepping through the locks.

// Load the SDK asynchronously 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. Share. [103] The 1954 flood carried 50 cubic kilometres (12 cu mi) of water. [28] In 1932, the Nationalist government, led by Chiang Kai-shek, began preliminary work on plans in the Three Gorges. The maximum power-output curves were calculated based on the average flow rate at the dam site, assuming the water level is 175 m and the plant gross efficiency is 90.15%. If playback doesn't begin shortly, try restarting your device. fjs.parentNode.insertBefore(js, fjs); [128] As of June 2008, China relocated 1.24 million residents (ending with Gaoyang in Hubei Province) as 13 cities, 140 towns and 1350 villages either flooded or were partially flooded by the reservoir,[129][130][131] about 1.5% of the province's 60.3 million and Chongqing Municipality's 31.44 million population. As there are separate sets of locks for upstream and downstream traffic, this system is more water efficient than bi-directional staircase locks. 9. [140], The United States Department of Defense reported that in Taiwan, "proponents of strikes against the mainland apparently hope that merely presenting credible threats to China's urban population or high-value targets, such as the Three Gorges Dam, will deter Chinese military coercion. [40], The government estimated that the Three Gorges Dam project would cost 180 billion yuan (US$22.5 billion). Shanghai Daily reported that the first operational use of the lift was on September 18, 2016, when limited "operational testing" of the lift began. 2) started on July 10, 2003; the north side became completely operational September 7, 2005, with the implementation of generator No. It might be about to collapse. The dam limited the water flow to less than 40,000 cubic metres (1,400,000 cu ft) per second, raising the upstream water level from 145.13 m (476.1 ft) on August 1, 2009, to 152.88 m (501.6 ft) on August 8, 2009. However, two weeks ago we reported China’s massive Three Gorges Dam is at risk of blowing, putting 400 million people at risk. [98] The dam contributed to the functional extinction of the baiji Yangtze river dolphin. In 1958, after the Hundred Flowers Campaign, some engineers who spoke out against the project were imprisoned. Shopping. Th photo, taken on August 17, 2020, shows water gushing out from the Three Gorges Dam in southwest China's Chongqing province. [125], Plans also exist for the construction of short portage railways bypassing the dam area altogether. [13] The sixth (No. Cheng says that the flood has already raised the water dammed behind the Three Gorges to 50 — fifty — feet higher than the maximum flood level. [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%. According to the Changjiang Ministry of Water Resources, both the Gezhou Dam and the Three Gorges Dam stopped 30 billion cubic meters of floodwater during the last 30-days. [27][28] He stated that a dam capable of generating 30 million horsepower (22 GW) was possible downstream of the Three Gorges. [112][113] That is 30 m (98 ft) longer than those on the St Lawrence Seaway, but half as deep. [94] Freshwater fish are especially affected by dams due to changes in the water temperature and flow regime. By providing flood storage space, the dam reduces the potential for floods downstream which could possibly affect millions. [42] It was estimated in 2009 that the construction cost would be recovered when the dam had generated 1,000 terawatt-hours (3,600 PJ) of electricity, yielding 250 billion yuan. In 1939, during the Second Sino-Japanese War, Japanese military forces occupied Yichang and surveyed the area. Though the "distortion" later proved to be caused by low resolution of the image, the "deformation and collapse prediction" continued to circulate. [101][102] In 1954, the river flooded 193,000 km2 (74,500 sq mi), killing 33,169 people and forcing 18,884,000 people to move. "[141], The notion that the military in Taiwan would seek to destroy the dam provoked an angry response from the mainland Chinese media. The water also powers the Gezhouba Dam downstream. People's Liberation Army General Liu Yuan was quoted in the China Youth Daily saying that the People's Republic of China would be "seriously on guard against threats from Taiwan independence terrorists. The dam's reservoir rose nearly 3 m (9.8 ft) in 24 hours and reduced the outflow to 40,000 m3/s (1,400,000 cu ft/s) in discharges downstream, effectively alleviating serious impacts on the middle and lower river. Three Gorges Dam sets power generation record in 2020 China.org.cn 01:34 2-Jan-21. [104] Also, the dam cannot protect against some of the large tributaries downstream, including the Xiang, Zishui, Yuanshui, Lishui, Hanshui, and the Gan. The provinces of Hunan, Henan and Hubei, where the Three Gorges dam is located, were also braced for heavy rain on Thursday. [72], During the November to May dry season, power output is limited by the river's flow rate, as seen in the diagrams on the right. The technology transfer agreement was signed together with the contract. The moving mass (including counterweights) is 34,000 tonnes. However, damage to the entire dam through means such as missiles could cause flooding along a large area of the Yangtze River due to overflow spillage.[143]. [citation needed]. [80][81], According to the National Development and Reform Commission, 366 grams of coal would produce 1 kWh of electricity during 2006. Three Gorges Dam Collapse - The Exact Simulation. It contains 39.3 km3 (31,900,000 acre⋅ft) of water and has a total surface area of 1,045 km2 (403 sq mi). 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. The flood covered Wuhan, a city of eight million people, for over three months, and the Jingguang Railway was out of service for more than 100 days. }(document, "script", "facebook-jssdk")); Up to ~400 million people live downstream of the dam. The Asian Times reported yesterday: 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. The "arriving silt—so long as it does arrive—strengthens the bed on which Shanghai is built... the less the tonnage of arriving sediment the more vulnerable is this biggest of Chinese cities to inundation...", This page was last edited on 15 January 2021, at 04:41. She is, or was, his biggest long-term threat to leading, In a legal filing denounced by Kyle Rittenhouse’s attorney as “just another. [29] Some 54 Chinese engineers went to the U.S. for training. Watch later. “With hindsight, I think that all those experts who opposed the buildings of the Three Gorges were right,” Zhang said on Radio Free Asia. The point here is that anyone concerned about food anywhere should want to think through what they might do if the TGD failed. In 1998, a flood in the same area caused billions of dollars in damage; 2,039 km2 (787 sq mi) of farmland were flooded. cookie : true, // enable cookies to allow the server to access [108], During the 2010 South China floods in July, inflows at the Three Gorges Dam reached a peak of 70,000 m3/s (2,500,000 cu ft/s), exceeding the peak during the 1998 Yangtze River Floods. THREE GORGES DAM COLLAPSE - FAILED DAMS UPSTREAM OF 3GD. // the session Then in 2018 it was reported online that pictures show that the Three Gorges Dam has moved: An expert on the region’s food supply, Geoff Quartermaine Bastin, provided this analysis regarding the impact on the world’s food supply should the massive dam break: The collapse of the TGD would destroy all the cropland and livestock downstream, destroy major cities such as Wuhan and could threaten Shanghai. [8][9], The dam body was completed in 2006. Three Gorges Dam sets new annual power generation record for 2020 International Water Power and Dam Construction 11:25 4-Jan-21. [85], Research by the United Nations Food and Agriculture Organization suggested that the Asia-Pacific region would, overall, gain about 6,000 km2 (2,300 sq mi) of forest by 2008. After the 1954 Yangtze River Floods, in 1956, Mao Zedong authored "Swimming", a poem about his fascination with a dam on the Yangtze River. The dam is expected to minimize the effect of even a "super" flood. This is particularly detrimental to the ecosystem of the region because the Yangtze River basin is home to 361 different fish species and accounts for 27 percent of all endangered freshwater fish species in China. [132] About 140,000 residents were relocated to other provinces. Scientist Wang Weiluo said that the Three Gorges Dam was not as stable as many people thought. [12] Among those 32 main generators, 14 are installed in the north side of the dam, 12 in the south side, and the remaining six in the underground power plant in the mountain south of the dam. China's Three Gorges Dam in danger of collapse any time. Plenty of farm land and China's most important industrial area are built beside the river. In 2012, the dam's 32 generating units generated a record 98.1 TWh of electricity, which accounts for 14% of China's total hydro generation. Even before construction of the Three Gorges Dam began in 1994, many experts were already criticizing the project. Huang predicted numerous negative consequences should the Three Gorges Dam be built, including the collapse … On July 18, 2020, the Chinese state-run press agency Xinhua News Agency stated that "the monitoring records of the Three Gorges Project's operation department showed that the average values of the main parameters such as dam displacement, seepage, and deformation were within the normal range, and the safety indicators of the dam's water retaining structure were stable. The alternating current (AC) lines to the Central China Grid have a total capacity of 12,000 MW. The ship lift can lift ships of up to 3,000 tons. A similar separation is used on the downstream side, seen partially in the preceding image. Rated power is 778 MVA, with a maximum of 840 MVA and a power factor of 0.9. Each of them is made up of five stages, with transit time at around four hours. The actual power output in 2008 was obtained based on the monthly electricity sent to the grid. And that if it fails, it would kill millions of people, perhaps 100 million according to some claims, and displace even more. The water level upstream drops from 175 to 145 m (574 to 476 ft),[107] preparing for the rainy season. [37] It has a combined generating capacity of 22.5 gigawatts and a designed annual generation capacity of 88.2 billion kilowatt hours. Though it was close to this level even at the start of construction, the dam further decreased its habitat and increased ship travel, which are among the factors causing what will be its ultimate demise. Most of the generators are water-cooled. China finally admits Its Three Gorges Dam has ‘deformed slightly’ but claims it happened over the weekend, ignoring reports this happened long ago. 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. [8], The State Grid Corporation and China Southern Power Grid paid a flat rate of ¥250 per MWh (US$35.7) until July 2, 2008. Tap to … Made of concrete and steel, the dam is 2,335 m (7,661 ft) long and the top of the dam is 185 m (607 ft) above sea level. Construction was completed in December 2007, one year ahead of schedule. But not just to China. The total capacity of the ship locks is expected to reach 100 million tonnes per year.[83]. The total capacity of those four dams is 38,500 MW,[148] almost double the capacity of the Three Gorges. [84] One is that sedimentation projections are not agreed upon, and the other is that the dam sits on a seismic fault. The problem is that China once claimed the dam would withstand a 10,000 year flood, then a 1,000 year flood and now only a 100 year flood. Millions were displaced as an area of about 600 kilometers was submerged to create the world’s largest dam and hydroelectricity facilities. Completely interpretation their picture within the Tv set play, the eternally Piaget duplicate wrist watches with. In addition, populations of the Yangtze sturgeon are guaranteed to be "negatively affected" by the dam. Bearing load is 5050/5500 tonnes. [105] In early August 2009, the largest flood in five years passed through the dam site. Besides, Mr. Wang pointed out that the design, construction and quality assessment of the dam were all done by the same expert teams and the project completion time was too fast. [36], In February 2012, Xinhua reported that the four towers that are to support the ship lift had almost been completed.[120].

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