Transfer water from the upper, middle and lower reaches of the Yangtze River to meet the development needs of northwest and north China, namely, the west route project of South-to-North Water Transfer, the middle route project of South-to-North Water Transfer and the east route project of South-to-North Water Transfer. The South-to-North Water Transfer Project is divided into three water transfer routes: east, middle and west. Upon completion, it will be connected with the Yangtze River, Huaihe River, Yellow River and Haihe River, forming the overall pattern of "four horizontals and three verticals, north-south allocation and east-west mutual assistance" of water resources in China.
Because 80% of the water-deficient areas in the Huang-Huai-Hai River Basin are located in the Huang-Huai-Hai Plain and Jiaodong area, it is imperative to give priority to the implementation of the East and Middle Route projects. In the Huang-Huai-Hai Plain and Jiaodong area, 60% of the water shortage areas are concentrated in cities, and the urban population and industrial output value are concentrated. The economic and social impact of water shortage is enormous.
Therefore, the short-term water supply goal of the South-to-North Water Transfer Project is to solve the urban water shortage and give consideration to ecological and agricultural water use.
Extended data:
The South-to-North Water Transfer Project is by far the largest water transfer project in the world. It spans the Yangtze River, Huaihe River, Yellow River and Haihe River, involving more than ten provinces (autonomous regions and municipalities directly under the Central Government), with long water transmission lines and many rivers.
The project involves a wide range and has great benefits, including water conservancy projects such as reservoirs, lakes, canals, rivers, dams, pumping stations, tunnels, aqueducts, culverts, inverted siphons, pccp pipelines and channels. It is a very complicated giant water conservancy project, and its scale and difficulty are unprecedented at home and abroad.
Only the first phase of the East and Middle Lines has 65.438+78 billion cubic meters of earthwork excavation, 620 million cubic meters of earthwork filling and 63 million cubic meters of concrete.
Source of reference: China Net-Introduction of South-to-North Water Transfer Project in China
Reference source: China Net-What is the South-to-North Water Transfer Project?