Is the Three Gorges Upstream, Downstream or Midstream?

The Three Gorges lies in the upper reaches of the Yangtze River. Geographically, Yichang and above are the upper reaches of the Yangtze River, and the Three Gorges (Qutang Gorge, Wuxia Gorge and Xiling Gorge) are all above the Yangtze River (as shown below).

The Three Gorges Dam is located in the upper reaches of the Yangtze River (from the source of the Yangtze River to Yichang, Hubei). The dam is located in Yichang City, Hubei Province, in the east of Chongqing. According to the direction of the Yangtze River, the Three Gorges Dam is located in the lower reaches of Chongqing.

The dynamic total investment of the Three Gorges Dam project is estimated to be 203.9 billion yuan, and the project implementation is divided into three stages. Phase I Project 1994- 1997, which is for construction preparation and phase I project; The second phase project (1998-2003) is the second phase project; The third phase of the project is from 2004 to 2009.

Extended data:

The world status of the Three Gorges Dam;

1. The Three Gorges Hydropower Station has a total installed capacity of18.2 million kilowatts and an average annual power generation of 84.68 billion kwh, making it the largest power station in the world.

2. The dam axis of the Three Gorges Dam is 2,309.47 meters long, the spillway dam is 483 meters long, the hydropower station unit is 700,000 kilowatts ×26 sets, and the double-line five-stage lock+ship lift is the largest water conservancy project in the world.

3. The volume of earth and stone excavation and filling for the main building of the Three Gorges Project is about 65.438+0.34 billion cubic meters, the volume of concrete pouring is 27.94 million cubic meters, the steel bar system is 463,000 tons, and the metal knot system is 256,500 tons. It is the largest water conservancy project in the world.

4. The maximum flood discharge capacity of the spillway gate of the Three Gorges Project is 102500 m3/s, which is the largest flood discharge capacity in the world.

5. The Three Gorges Project is the largest water conservancy project during the construction period, with the interception flow of 90 10 m3/s and the maximum flood peak flow of construction diversion of 79,000m3/s..

6. The dynamic resettlement of Three Gorges Reservoir can reach1130,000, which is the most difficult resettlement construction project in the world.