What is the primary function of the Three Gorges Water Conservancy Project, which is built on the ma

The primary function of the Three Gorges Water Conservancy Project is flood control. Before the completion of the Three Gorges Project, the middle and lower reaches of the Yangtze River basin were threatened by floods, which seriously affected the safety of people's lives and property. The Three Gorges Project has controlled the flooding of the Sichuan River and greatly improved the flood control capacity of the middle and lower reaches of the Yangtze River.

Provide security for regional economic development.

The primary function of the Three Gorges Water Conservancy Project, which is built on the main stream of the Yangtze River, is flood control.

Three Gorges Project. There are three main benefits, namely flood control, power generation and shipping, of which flood control is considered to be the core benefit of the Three Gorges Project. Historically, the upper reaches of the Yangtze River and its many tributaries have been subject to frequent flooding, and each time there is a catastrophic flood, the Jingzhou section of the Yangtze River below Yichang has to take flood diversion measures to flood villages and farmland to ensure the safety of Wuhan.

After the completion of the Three Gorges Project, the storage capacity provided by its huge storage capacity will enable the downstream Jingjiang region to withstand a once-in-a-century catastrophic flood, and will also help the management of Dongting Lake and the comprehensive repair of the Jingjiang embankment.

Impact of the Three Gorges Water Conservancy Project:

The impact of the Three Gorges Project on the environment comes from the pollution of reservoirs. Sewage and domestic garbage discharged from towns and tourists on both sides of the Three Gorges.

All of them are discharged directly into the Yangtze River without treatment.

After the impoundment, due to the static flow of water, pollutants cannot be drained in time and accumulate in the reservoir, so it has caused water quality deterioration and garbage floating, and may cause infectious diseases, and some towns have collected domestic water from other water sources.

At the same time, a large number of immigrants have reclaimed wasteland, which has also exacerbated water pollution and caused soil erosion. In this regard, the local government is vigorously building a sewage treatment plant.

and landfills to address the pollution problem, and if the pollution is found to be too severe, dams may be used to increase the amount of water discharged.

The above content refers to the Encyclopedia - Three Gorges Water Conservancy Project.

The first task of the Three Gorges Project was flood control, and then a large amount of land was flooded. It is the world's largest water conservancy project, the Three Gorges Project, which is the largest water conservancy project in the world, and at the same time reduces the environmental pollution caused by mineral burning.

Among them, flood control is considered to be the core benefit of the Three Gorges Project, and there are about three common levels. Water conservancy projects have a large impact on the environment.

However, after the completion of the Three Gorges Project, the electricity generated by the water conservancy project is clean, so the core of the Three Gorges Dam is to evaluate the gains and losses of the water conservancy project.

The primary task of the Three Gorges Water Conservancy Project is flood control, and secondly, it has comprehensive benefits such as power generation, shipping, water supply, and aquaculture.

The Three Gorges Project and the Water Conservancy Project are located in the middle reaches of the Yangtze River. It has comprehensive benefits such as flood control, power generation, aquaculture, and water supply, and its primary function is daily flood control.

The primary function of the Three Gorges of the Yangtze River is to regulate water volume, power generation and shipping.

The Three Gorges Water Conservancy Project is located in the Xiling Gorge section of the Yangtze River in Yichang City, Hubei Province, with a control basin area of 1 million square kilometers, accounting for 56% of the total area of the Yangtze River basin. The main functions of the Three Gorges Water Conservancy Project include flood control, power generation, navigation and other aspects. The Three Gorges Project can ensure the safety of flood control in the middle and lower reaches of the Yangtze River.

The normal water storage level of the Three Gorges Reservoir is 175 meters, and the flood control reservoir has a capacity of 100 million cubic meters, which further improves the flood prevention capacity of the Jingjiang River section, the Jianghan Plain, and the Dongting Lake area, and is conducive to improving the flood control situation in the Dongting Lake area, prolonging the life of the Dongting Lake, and creating favorable conditions for the Dongting Lake to accept the floods of the "four waters" of Hunan and the Yangtze River. The Three Gorges Project is the pivot for the rational development and utilization of the Yangtze River's hydropower resources. With an installed capacity of 22.5 million kilowatts, the Three Gorges Power Station has huge power benefits, which can effectively solve the problem of power shortage in central and eastern China, and greatly improve the economy and reliability of the power grid.

The Three Gorges Project is a strategic measure to improve shipping on the Yangtze River. The completion of the Three Gorges Project has turned more than 600 kilometers of waterways in the reservoir area from many shoals, rapids, and narrowness into excellent deep-water waterways, and at the same time, it can increase the flow of the river during the dry season, increase the navigable water depth of the channel during the dry season, and turn the Yangtze River into a real "first-class waterway," realize the direct flow of 10,000-ton ships from Shanghai and Wuhan to Chongqing, and increase the annual navigation capacity from 10 million tons to 50 million tons. The Three Gorges Project is conducive to improving the ecological environment of the Yangtze River.

The completion of the Three Gorges Project has reduced the risk of devastating disasters in the Jingjiang region and greatly reduced the ecological and environmental problems caused by flood control and flood distribution. At the same time, a large amount of clean, inexpensive and renewable hydropower can replace thermal power, which can reduce the annual emission of 100 million tons of carbon dioxide, 3 million tons of sulfur dioxide and 10,000 tons of carbon monoxide, as well as nitrogen oxides, greatly improving the ecological environment of the Yangtze River. The Three Gorges Project has brought tremendous economic, social, and environmental benefits to the great rejuvenation of the Chinese nation.

The Yangtze River Three Gorges Water Conservancy Project was completed in 2009, with a capacity of 18.2 million kilowatts, which is the world's largest water conservancy hub

So the answer is: flood control

1. The downstream of the dam is regulated by the reservoir, and the seasonal variation of river runoff is slower than that before construction.

2. Affected by the seasonal release of water from the reservoir, the downstream riverbed is eroded by flowing water (undercut), and the riverbed declines.

3. The reservoir is easy to cause sediment accumulation, which seriously affects the life of the reservoir; It causes sediment accumulation in the upper reaches of the reservoir, which is easy to cause flooding; It is easy to cause geological disasters such as ** and threaten the safety of reservoirs; Pollution has increased upstream, deteriorating the water quality of the reservoir.

<>1. Flood control: After the completion of the Three Gorges Dam, a huge reservoir will be formed to store floodwaters, so that the flood control capacity of the Jingjiang embankment downstream will be increased from defending against a flood that occurs once in ten years to resisting a major flood that occurs once in a century, and the flood control reservoir capacity will be between 73 and 22 billion cubic meters. In the event of a flood like the one in 1954, the Three Gorges could reduce the flood diversion by 100 to 15 billion cubic meters, and the section from the Jingjiang River to Wuhan still needs to divert 350 to 40 billion cubic meters. In the event of the 1998 flood, it can be effectively defended.

2. Power generation, the Three Gorges Hydropower Station is the world's largest hydropower station, with a capacity of 18.2 million kilowatts. The annual power generation capacity of this hydropower station is equivalent to the energy generated by the complete combustion of 4 million tons of standard coal. Installed capacity (26 6) 700,000 (18.2 million 4.2 million) kilowatts, annual power generation of 100 million kWh.

The main number of Chinese bureaus is in China, East China, South China, Chongqing and other regions.

3. Shipping, the Three Gorges Project is located at the junction of the upper reaches and the middle reaches of the Yangtze River, with a unique geographical location, which can canalize the section from Sandouping to Chongqing on the upper side, and increase the dry season flow of the middle reaches of the Yangtze River below the Gezhouba Water Conservancy Pivotal Judgment Button, which can fully improve the navigation conditions between Chongqing and Wuhan and meet the needs of the long-term development of the shipping industry in the upper and middle reaches of the Yangtze River. The navigable capacity can be increased from the current 10 million tons per year to 50 million tons. The Three Gorges Water Conservancy Project on the Yangtze River has achieved tremendous benefits in aquaculture, tourism, ecological protection, environmental purification, developmental resettlement, south-to-north water diversion, and water supply and irrigation.

The Three Gorges Hydropower Station has a capacity of 18.2 million kilowatts and an annual power generation capacity of 846.8 billion kilowatt hours, making it the largest power station in the world.

The Three Gorges Project has about 125 million cubic meters of earthwork and filling, 26.43 million cubic meters of concrete, and 593,000 tons of steel, making it the largest water conservancy project in the world.

The Three Gorges Project's flood gate has a maximum flood discharge capacity of 100,000 cubic meters per second, making it the largest flood gate in the world.

The Three Gorges Reservoir has a total storage capacity of 39.3 billion cubic meters, a flood control reservoir capacity of 221.5 billion cubic meters, and a flood control reservoir that can reduce the peak flow of 2.7 to 33,000 cubic meters per second, making it the most significant water conservancy project in the world for flood control.

The unprecedented scale of one million migrants in the Three Gorges is the largest in the world's reservoir construction. There are more than 30 countries in the world with a population of less than 1 million, and the final population of migrants in the Three Gorges reservoir area will reach more than 1.13 million. By 2019, the Three Gorges reservoir area will relocate two cities, 11 county seats, and 114 market towns.

In addition, the Three Gorges Project is also the water conservancy project with the largest water conservancy construction intensity in the world, the largest construction scale in the world, the largest flow during the construction period of the world's water conservancy project, and the most significant shipping benefits in the world.