The reason why the Three Gorges is suitable for the construction of hydropower stations

Sometimes the White Emperor is sent to the court.

Twilight to Gangneung. It can be seen that the water flow is fast, and it is the most suitable and power generation; "Hanging Spring Waterfall, Flying in the Meantime" can be seen to have a large drop, which is very suitable for building a power station. Three Gorges Hydropower Station.

26 hydro-generator sets with a single capacity of 700,000 kilowatts will be installed.

With 18.2 million kilowatts and an average annual power generation of 84.7 billion kWh, it is the largest hydropower station in the world. (18 700,000 kW hydropower units with an installed capacity of 12.6 million kW) at the Itaipu Hydropower Station).

The Three Gorges Water Conservancy Hub Dam is a concrete gravity dam with a total length of 2,345 meters at the water retention front, a maximum dam height of 181 meters, and a total concrete volume of 14.86 million cubic meters of the dam body, ranking first in the world in terms of total dam volume.

Three Gorges Project. 102.83 million cubic meters of earth and stone excavation of building foundation, 27.94 million cubic meters of concrete pouring, 256,500 tons of metal structure installation, and 26 sets of mechanical and electrical equipment installation of hydropower stations with 18.2 million kilowatts, all of which are the largest water conservancy projects built and under construction in the world.

The double-line five-step cascade lock is the world's highest total head of 113 meters, the largest number of five levels of inland river locks, its single-stage lock chamber effective size of 280 meters long, 34 meters wide, 5 meters of water depth and 10,000-ton fleet of ship, is also the world's highest level of inland river locks in the built locks, the maximum working head of the lock, the maximum water charge and discharge of 260,000 cubic meters, the maximum height of slope excavation is 170 meters, all of which are the highest level in the world.

The effective size of the single-line one-stage vertical ship lift bearing compartment is 120 18 meters, the total weight is 11,800 tons, the maximum lifting height is 113 meters, the tonnage of the ship is 3,000 tons, the water level amplitude is 30 meters upstream, and the indicators are 12 meters downstream are all beyond the world level.

When the normal water storage level of the Three Gorges is 175 meters, the total storage capacity is 39.3 billion cubic meters, making it the world's largest water conservancy hub with the largest flood control benefits.

The Three Gorges Reservoir area has an inundated land area of 632 square kilometers.

According to the 1992 survey, there are 1,000 hectares of cultivated land below the inundation line, with a population of 10,000 people, and 1.13 million people are planned to be eventually resettled. Therefore, the scale and difficulty of the relocation and resettlement of migrants from the Three Gorges Reservoir are among the highest in the world.

The Three Gorges Hydropower Station is the largest hydropower station in the world and the largest construction project ever built in China. The relocation and environmental problems caused by it have always been accompanied by huge controversies from the moment it was first prepared. The Three Gorges Hydropower Station has more than 10 functions, such as shipping, power generation, planting, and so on.

The Three Gorges Hydropower Station was approved by the National People's Congress of China in 1992, started construction in 1994, started to store water for power generation on the afternoon of June 1, 2003, and was completed in 2009.

The unit equipment is mainly provided by the VGS consortium composed of Voith of Germany, General Electric of the United States, Siemens of Germany, and the Alstom consortium of Alstom of France and ABB of Switzerland. When they signed the supply agreement, they promised to transfer the relevant technology to the domestic motor manufacturer in China free of charge. The Three Gorges Hydropower Station will be built and managed by the State Grid Corporation of China, and a total of 15 500 kV high-voltage transmission lines are expected to be installed to connect to regional power grids.

The Three Gorges Hydropower Station has a dam elevation of 185 meters, a water storage elevation of 175 meters, a reservoir length of more than 600 kilometers, a total investment of 100 million yuan, and the installation of 32 hydropower units with a single capacity of 700,000 kilowatts. The last hydropower unit of the Three Gorges Power Station was put into operation on July 4, 2012, which means that the Three Gorges Hydropower Station, with an installed capacity of 22.4 million kilowatts, has become the world's largest hydropower station and clean energy production base on July 4, 2012.

Seven hundred miles from the Three Gorges, there are mountains on both sides of the river.

Slightly nowhere to be found. Heavy rocks are stacked, hidden from the sky. As for the Xiashui Xiangling, it is blocked along the trace, or the king's order is urgently announced, and sometimes the white emperor is sent to the court, and the twilight reaches Jiangling.

During this period, 1,200 miles, although he rode to resist the wind, he did not take the disease.

The previous sentence explains the Three Gorges: the canyon is long (700 li), the river channel is narrow (hidden from the sky), and the two banks are continuous, which is suitable for the construction of high dams and large reservoirs, which are necessary geographical and geological conditions for large-scale hydropower projects.

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Problem description: I want a good reason.

Analysis: Why build the Three Gorges Project?

1: The primary goal is flood control: The Three Gorges Water Conservancy Project is a key backbone project in the flood control system in the middle and lower reaches of the Yangtze River.

Its geographical location is strategic, which can effectively control flooding in the upper reaches of the Yangtze River. Through the Three Gorges Reservoir, the flood control standard of the Jingjiang River section can be raised from the current once in 10 years to once in 100 years.

2: Provide renewable energy: The Three Gorges Hydropower Station has a capacity of 18.2 million kilowatts, which will provide reliable, cheap and clean renewable energy for the economically developed and energy-deficient regions of Eastern, Central and Southern China.

3: Improving the Yangtze River waterway from Yichang to Chongqing: The Three Gorges Reservoir will significantly improve the 660-kilometer Yangtze River waterway from Yichang to Chongqing, with a 10,000-ton fleet of ships directly reaching the port of Chongqing.