巢湖生态引水对改善江湖交换关系的作用研究

从江湖水量交换的角度分析巢湖对生态引水的需求。利用长系列的流量资料,计算分析了巢湖闸建闸前后江湖交换水量分别为13.6亿m3及1.72亿m3。现状引水线路不同河道规模条件下年均可引水量为1.16亿~2.80亿m3。河道底宽为90 m时,生态引水对江湖交换关系改善的贡献为20.6%。本研究为巢湖水环境综合治理提供科学依据。

Study of the effect of ecological diversions for Chao Lake to improve the rivers and lakes' exchange relations

The exchange of water from rivers and lakes is analyzed on the ecological point of view of lake water needs.Using a long series of flow data,calculation and analysis of the ChaoLakes before and after the exchange of water sluice gate was 1.36 billion m3 and 172 million m3.Diversion channel size status under different annual average amount of water is 1.16 billion to 280 million m3.When channel bottom width is 90m,the ecological relationship between diversion of rivers and lakes to improve the contribution of exchange is 20.6%.This study provides a scientific basis for the environment management of Chao Lake.