南水北调西线工程调水方案研究

Study on Water Diversion Scheme of the Western Route of South-to-North Water Diversion Project

南水北调西线工程前期工作已持续近70 a,研究的调水范围涉及雅鲁藏布江、怒江、澜沧江、通天河、金沙江、雅砻江、大渡河、岷江、涪江、白龙江等河流,面积达115万km2,勘查了从海拔2 000 m到4 400 m的相关干支流河段,研究的调水方案达数百个,进行了不同供水范围、多种调水规模、多种调水方式的方案比选。经过多阶段的深入论证,西线工程总体规划方案和近期工程规划方案被纳入国务院批复的南水北调总体规划,形成了第一期工程项目建议书。随着西线工程前期研究工作的深入,结合新形势和新时代发展要求,西线工程调水方案正逐步得到深化,形成了上下线组合调水方案。

The study on the western route of the South-to-North Water Diversion Project has lasted for 70 years since 1952. The study aimed at rivers including the Yarlung Zangbo River, Nu River, Lancang River, Tongtian River, Jinsha River, Yalong River, Dadu River, Minjiang River, Fu River and Bailong River, covering an area of 1.15 million km2. During such study, related main stream and tributaries at elevation from 2,000 m to 4,400 m were investigated, hundreds of water diversion alternatives were studied and route alternatives for various water supply scopes, water diversion capacities and modes were compared. After several stages of deepening demonstration, the overall planning and recent project planning of the western route had been formed and incorporated into the master planning of the South-to-North Water Diversion Project approved by the State Council and the project proposal of the first phase works of the western route had been completed. With the deepening of the preliminary study on the western route and in combination with the development requirements of the new situation and the new era, the water diversion scheme of the western route had been gradually improved to the scheme of combination of upper and lower routes.