牛栏江-滇池补水工程改善滇池水环境效果预测

Effect prediction of improving water environment by Niulan River-Dianchi Lake Water Supplement Project

以适宜滇池水流水质输移扩散特点的滇池水环境数值模拟技术为手段,综合分析了牛栏江补水对滇池水体交换性能、湖区湖流形态和水流流速的影响,模拟预测了滇池补水前后入湖污染物滞湖量的变化,对比分析了补水入湖线路对湖区水质的影响差异,预测了2020年不同治污情景下滇池可能出现的水质状况。该研究成果可为滇池流域水污染综合治理和牛栏江-滇池补水工程设计及运行管理提供科学依据。

On the basis of the water environment numerical simulation technology, which is suitable for the analysis of water movement and diffusion of Dianchi Lake, the influence of water supplement from Niulan River on water exchange characteristics, flow pattern and flow velocity were comprehensively analyzed. The variation of the pollutant amount into the Dianchi Lake and re- tention state before and after the water supplement were simulated and predicted, the influence of different water supplement line entering into the lake on water quality was comparaed and analyzed; the different water quality status in different pollution treat- ment conditions at 2020 are predicted. The study result can offer scientific basis for water pollution comprehensive treatment of Dianchi Basin, design and operating management of Niulan River - Dianchi Lake Water Supplement Project.