| As the level of urbanization of China is higher with the development,the risk of single source of water in main city and the lack of clean water in town are more and more serious.The rational allocation of regional water resource could solve the problems above.Recently,many cities have built or are ready to build more long-distance water projects, long-distance water projects have become an inevitable trend of sustainable utban development. In the current situation and the current situation of water resources in the water supply network model based on the generalization, Regional water supply is the most important investment most long-distance network pipes targeted, systematic research, Especially large diameter pipeline crossing rivers, highways, railways and other obstacles, The introduction of new, traversal can be implemented, To meet the advance of the project. Multi-program comparison, analyze and summarize the pipe, diameter, form interface, pipeline corrosion and regulation structures and other factors. This is the future regional water supply security, economy, reliability has important significance.In this paper, Yangtze diversion project (the main city of Nanjing-Gaochun Section), For long distance, design and construction of large diameter storm water conveyance project conducted systematic analysis, Has a strong practical significance and reference.Practical problems through highway, interoperability and rivers for large diameter water pipelines, On overhead pipes, immersed tube, top tube, trombone (trenchless directional drilling) and other construction methods are compared, Proposed to optimize the design and construction program. It also analyzes and summarizes the project’s long-distance water booster station and network settings, and debug the design and construction process of the lessons learned. To solve a series of problems long-distance, large-diameter water pipeline design and construction problems encountered. |
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