改善汉阳湖群水环境的调水方案研究

Research on water diversion project to improve water environment of Hanyang lakes

湖群调水后,湖群及其连通沟渠共同组成了复杂的湖网结构,调水线路不单一,存在着二次分流问题等。以汉阳湖群为例,对湖群调水的方案进行了优选,并预测分析了引江灌湖工程实施后汉阳湖群的水流水质变化。得出结论:①流量越大,湖区流动性越好;②四湖的整体流动性以龙阳湖最优,三角湖最差;③由于湖面宽广,湖网形状复杂,引入的水流难以置换全部水体,出现缓流区域和死水区。

After water diversion among lakes, the lakes and the connected channels form a complex lake net structure, leading to problems such as multi-selection of diversion routes and existence of secondary distributaries. Taking the Haiyang lakes as an example, water diversion project was optimized, and the changes of water dynamics and water quality after implementation of the water diversion project were predicted and analyzed. It is concluded that： 1. the more the water transferred, the better the water flows; 2. the movement of the flow in Longyang Lake is the best and that of Sanjiao Lake is the worst among the four lakes; 3. because of the large area and complicated shapes of the lakes, the water transferred can not substitute all the water in the lakes, thus dynamic-water areas and static-water areas coexist in the lakes.