基于MIKE21FM模型的厦门筼筜湖水质提升方案

Water Quality Improvement Scheme of Yundang Lake in Xiamen Based on MIKE21FM Model

为进一步全面提升厦门筼筜湖水环境质量,利用MIKE21FM构建筼筜湖二维水动力、水质数学模型,并对模型参数进行率定验证,运用模型模拟分析四种水质提升方案下的水动力、水质情况。结果表明,综合了重建西堤闸扩大纳潮量、延长导流堤至干渠内部、扩建西水东调海水泵站三个单项措施的组合方案对筼筜湖水动力、水质提升最为全面,效果最优。建议在加快推进截污、清淤综合整治工程的同时,继续加强开展效果更好的引清活水工程,促使筼筜湖水生态环境更快、更好提升。

In order to further enhance water quality of the Yundang Lake in Xiamen,MIKE21 FM was used to construct a 2 Dhydrodynamic and water quality mathematical model.The model parameters were calibrated and verified.The model was used to simulate the hydrodynamic and water quality of the four kinds of water quality improvement programs.The results show that the combination plan of three individual measures to rebuild the Xidi gate,prolong dike,and expand the west-east water transfer seawater pumping station has made the most improvement on the hydrodynamic and water quality of the Yundang Lake.It is suggested that while accelerating the project of sewage interception and dredging,we should continue to intensify the development of better-performing clean water diversion projects and promote the ecological environment of Yundang Lake to be improved faster and better.