通过收集调研大量水文、地质、水资源、工程技术资料, 在现有研究基础上论述西线工程方案优化, 提出工程研 究面临的主要问题; 利用多指标比对法, 从西线工程调水断面下移自流方案和抽水方案入手, 通过调水河流可调水 量、环境影响、移民范围、投资费用和经济效益等指标探讨方案的优劣, 论证工程下移自流方案的可行性与优越性。 同时, 为减轻调水对生态、环境、社会等方面的影响, 分析并拟定金沙江、雅砻江、大渡河多年平均年调水总量为 170 亿 m3。研究成果可为未来工程建设决策提供重要技术依据。

Through collecting and investigating a large amount of hydrology , geology , water resources, and engineering technical data, the paper discusses the optimization of the western route project scheme, and puts forward the main problems faced by the eng ineering research on the basis of the existing research; using the multi-index comparison method, starting from the water diversion section downward moving gravity flow scheme and pumping scheme of the west line project , discuss the pros and cons of the plan th rough indicators such as the adjustable river water volume, environmental impact, resettlement scope, investment cost and economic benefit, and demonstrate the feasibility and superiority of the project shifting the gravity flow plan. Simultaneously , in order to reduce the impact of water transfer on ecology , environment, society and other aspects, the Jinsha River, Ya long River , and Dadu River have been analyzed and drafted for an average annual water transfer volume of 17 ×109 m3 . The research results can provide an important technical basis for future engineering construction decisions.

国家自然科学基金( 51569025) ; 国家重点研发计划项目( 2018YFC1508706)