Analysis on Key Technical Issues of West Route Works of Water Transfer Project from South to North

The available water for regulation, an engineering plan and water supply to the supplied area are the three major contents of the west route works of Water Transfer Project from South to North and also three key technical issues. To determine a basic point for adjustable water is to adhere to the principle of sustainable utilization of water resources, give priority to the consideration of actual water demand of the regulated area of a long-range year and consider the surplus water to be regulated to outside regions. The key technology of the first stage project is how to dig tunnels and this is to be solved by adopting excavators. The first object for water supply is ecology, then domestic and industrial use, finally agriculture. The analysis of available water for regulation, objects of water supply and supplied region all have been put into the contents of protection and improvement of ecological environment. This is shown that the ecological environment has held an important position in the west route works of Water Transfer Project from South to North and also shown the changes of ideology and concepts in water transfer projects.