中文摘要：

水电开发对天然河流的水文情势、水环境等势必会产生一定影响,尤其对于开发影响区内存在饮用水水源地此类敏感环境保护目标的情况,影响更是不容忽视。本文以汉江上游拟建旬阳水电站对其库区内安康马坡岭、许家台饮用水水源地水质的影响为研究实例,采用三维水动力学水质数学模型为研究手段,对电站水库兴建前后上述两水源地的COD、NH3-N污染物浓度分布状况进行了计算,并对比分析了建库前后水源地水质的变化趋势,得出了电站开发对其影响区内饮用水水源地水质的影响结论,为水电开发影响区内饮用水水源地保护措施的提出提供了理论依据。

英文摘要：

Hydroelectric development produces influences on the local hydrologic regime and water environments. A great attention to these influences is needed, particularly those on the drinking water source zones in the development influence area. This paper presents a study case of Xunyang hydropower station located at the upstream of HanJiang River, focusing on the water quality of Mapoling and Xujiatai drinking water source zone in Ankang. A 3D hydrodynamic and water quality model was adopted to calculate the distributions of COD and NH3-N concentration, and the variation in water quality of the drinking water source zone is analyzed. The conclusions obtained through this research provide a theoretical support of how to select protective measures on drinking water source zone in the hydroelectric development influence area.