The reason why the Three Gorges is suitable for building hydropower stations.

"Sometimes, Baidi goes to Jiangling at dusk" shows that the water is fast and the power generation is optimal; There is a big gap between "hanging spring waterfall and flying water", which is very suitable for building power stations. The Three Gorges Hydropower Station will install 26 hydro-generator sets with a single unit capacity of 700,000 kilowatts, with a total installed capacity of 65.438+08.2 million kilowatts and an average annual power generation of 84.7 billion kWh, making it the largest hydropower station in the world. (Yitaipu Hydropower Station installed 18 sets of 700,000 kW hydropower units with installed capacity12.6 million kW)

The Three Gorges Dam is a concrete gravity dam, with a total length of 2,345 meters, the maximum dam height 1.8 1 m, and the total amount of dam concrete 1.486 million cubic meters, ranking first in the world.

The foundation earthwork excavation of the Three Gorges Project is 6.5438+0.0283 million cubic meters, the concrete pouring is 27.94 million cubic meters, the metal structure installation is 256,500 tons, and the electromechanical equipment of the hydropower station is 26 sets with 6.5438+0.82 million kilowatts, all of which are the largest water conservancy projects in the world.

The double-line five-step lock is a five-step inland river lock with the highest total head 1 13m in the world. Its single-stage lock chamber has an effective size of 280m, a width of 34m, a water depth of 5m and a tonnage of10000t. It is also the highest-grade inland river lock in the world, with a maximum working head of 49.5m, a maximum water filling and drainage capacity of 260,000 m3 and a maximum slope excavation.

The effective size of the single-line first-class vertical ship lift is120×18× 3.5m, the total weight is11800t, the maximum lifting height is113m, the tonnage is 3,000t, and the water level fluctuates upstream by 30.

When the normal water level of the Three Gorges is1.75m, the total storage capacity is 39.3 billion cubic meters, which is the most effective water control project in the world.

The Three Gorges reservoir area is 632 square kilometers. According to the investigation of 1992, there are 24.5 thousand hectares of cultivated land below the submerged line, with a population of 844,654.38+0.3 million, and the planned final relocation and resettlement population reaches 654.38+0.65438+0.3 million. Therefore, the scale and difficulty of the relocation and resettlement of the Three Gorges Reservoir is the highest in the world.