Where is the source of the South-to-North Water Transfer Project?

1, East Route Project of South-to-North Water Transfer Project: Yangzhou

The starting point of the eastern route project is Yangzhou in the lower reaches of the Yangtze River, and the end point is Tianjin.

Water supply scope of the East Line Project: involving Jiangsu, Anhui, Shandong, Hebei and Tianjin.

Specifically, the plain in the lower reaches of the Huaihe River in central and northern Jiangsu except the abdomen of Lixia and its eastern and northern highlands; The banks of Huaihe River below Bengbu in Anhui Province, the banks of the new Bianhe River east of Huaibei City and some areas of Tianchang County; Around Nansi Lake in Shandong, on the side of Hanzhuang Canal and Ji Liang Canal, some cities in Jiaodong area, and non-Yellow River diversion irrigation areas in northern Shandong; Hebei Heilonggang Yundong area; Tianjin and its suburbs.

The eastern route project used the canal of the Yuan Dynasty. The purpose is to alleviate the shortage of water resources in Jiangsu, Anhui, Shandong, Hebei and Tianjin.

Of the 68 design unit projects in the first phase of the East Line, 29 have been completed. It is estimated that the main project directly related to water supply will be basically completed in March 20 14, and the first phase of the East Line will basically have water supply capacity.

2065438+Before the end of June 2004, the relevant water quality standards and water quality inspection work will be basically completed. The first phase of the East Route of South-to-North Water Transfer Project is scheduled to be officially opened in the third quarter of 20 13. By then, the Yangtze River water will transfer water to Shandong Peninsula and Lubei area, and Shandong, Jiangsu, Anhui and other areas along the water transfer line will benefit from it.

2. Middle Route Project of South-to-North Water Transfer Project: Danjiangkou Reservoir

The Middle Route of South-to-North Water Transfer Project is a water conveyance project that takes water from the east bank of Danjiangkou Reservoir in the middle and upper reaches of the Hanjiang River, the largest tributary of the Yangtze River, passes through Fangcheng Pass in Nanyang, Jianghuai watershed, excavates channels along the western edge of Tangbaihe River Basin and Huanghuaihai Plain, crosses the Yellow Tunnel in Wangcun, Xingyang City, Henan Province, and goes north along the west side of Beijing-Guangzhou Railway to Tuancheng Lake in Beijing Summer Palace.

The adjustable water volume of the middle route project is completed according to the later scale of Danjiangkou Reservoir, and the normal water level is1.70m.. Considering the development level in 2020, some compensation projects need to be done in the middle and lower reaches of the Hanjiang River to ensure the industrial and agricultural development, shipping and environmental water use in the transfer area. The average adjustable water volume for many years is141400 million cubic meters, and the average dry year is about 65.44 billion cubic meters (the guarantee rate is 75%).

The water supply scope is mainly in the central and western parts of Tangbaihe Plain and Huanghuaihai Plain, with a total area of about 654.38+0.55 million square kilometers. The project focuses on Henan, Hebei, Tianjin and Beijing, and more than 20 large and medium-sized cities along the route provide domestic and production water. And give consideration to the ecological environment and agricultural water use along the line. The total length of the central trunk water conveyance canal is 1267 km, and the total length from the trunk water conveyance canal to Tianjin is 154 km.

3. West Route Project of South-to-North Water Transfer Project: Yalong River, Dadu River and Tongtian River.

The west route project of South-to-North Water Transfer Project will transfer water from Tongtianhe (upper reaches of the Yangtze River), Yalong River (tributaries of the Yangtze River) and Dadu River to the Yellow River (northwest region) through tunnels, that is, transfer water from the upper reaches of the Yangtze River to the Yellow River.

The West Route Project of South-to-North Water Diversion is referred to as the West Route Water Diversion Project (the project is in the preliminary demonstration stage and is an unfinished project), which refers to a long-distance water diversion project from the Yangtze River system, such as Yalong River and Dadu River, which are tributaries in Sichuan in the upper reaches of the Yangtze River to Qing, Gan, Ning, Meng, Shaanxi and Jin in the upper reaches of the Yellow River. It is an important strategic project to supplement the shortage of water resources in the upper reaches of the Yellow River, solve the drought and water shortage in the northwest and promote the management and development.

The West Route Project of South-to-North Water Diversion is located in the western and northern regions of Sichuan, Qinghai, Gansu, Ningxia, Mongolia, Shaanxi and Shanxi in the southeast of Qinghai-Tibet Plateau in China. The elevation of the dam site is 2900-4000m. The diversion trunk line adopts diversion tunnel to cross the Yangtze River and Yellow River watershed to transfer water to the Yellow River, and the long-distance tunnel adopts gravity flow scheme.

Extended data:

South-to-North Water Diversion Project:

1, the largest water transfer project in the world.

The South-to-North Water Transfer Project is by far the largest water transfer project in the world. It crosses the Yangtze River, Huaihe River, Yellow River and Haihe River, involving 10 provinces (autonomous regions and municipalities directly under the Central Government), with long water transmission lines and many rivers crossing, involving a wide range of projects and huge benefits.

Only the first phase of the East and Middle Route Project, the earthwork excavation amount is 65.438+78 million cubic meters, the earthwork filling amount is 620 million cubic meters, and the concrete amount is 63 million cubic meters.

2. The longest water transfer project in the world.

The total length of the east, middle and west trunk lines planned for the South-to-North Water Transfer Project is 4,350 kilometers. At present, the first phase of the East and Middle Lines under construction has a total length of 2,899 kilometers, and the first-class supporting branch canals in six provinces and cities along the line are about 2,700 kilometers, with a total length of 5,599 kilometers.

3. The largest pumping station group in the world.

The first phase of the East Route of South-to-North Water Diversion Project has a total length of1.467km, with 3 cascade pumping stations, 22 hubs and 34 pumping stations, with a total lift of 65m and a total assembly machine of 1.60, with a total installed capacity of 366,200kW and a total installed flow of 4,447.6m3 per second.

4. The largest U-shaped aqueduct project in the world.

The turbulent aqueduct in the middle route of South-to-North Water Transfer Project is a three-way prestressed U-shaped aqueduct with an inner diameter of 9 meters, a single span of 40 meters and a maximum flow of 420 cubic meters per second. The aqueduct is cast in situ by trencher, and its inner diameter, single span and maximum flow rate are the highest in the world.

5. The largest diameter cross-river water conveyance tunnel in China.

The middle route of South-to-North Water Transfer Project has creatively designed two inner and outer lining tunnels with an inner diameter of 7 meters. The two inner liners are separated by a permeable cushion, and the inner and outer liners bear the pressure of internal and external water respectively. This structural form is a precedent at home and abroad, and it is also the first project to cross the Yellow River by shield method in China, setting a new record for the long-distance soft soil construction of river-crossing tunnels in China's water conservancy and hydropower projects.

6. The largest dam heightening project in China.

Danjiangkou dam heightening project is to thicken and heighten concrete on the original dam body. After the dam heightening project is completed, the elevation of the dam crest will be increased from the current 162m to 176.6m, and the normal water storage level will be increased from 157m to 170m, which can correspondingly increase the storage capacity1kloc-0/6 billion cubic meters.

It is the most difficult time in the history of dam heightening to complete the inspection, repair and heightening of concrete dam cracks without affecting the normal operation of the dam.

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