中文摘要：

利用二维水动力数学模型模拟海阳人工泻湖潮流运动，并分析了在人工泻湖的西向开通导堤前后泻湖内的潮位变化与水体运动变化过程，据此计算出泻湖内的海水交换率及海水的半更换期。结果表明，在未开通西通道时，泻湖西侧水体的单宽流量在涨急和落急时只有0．66m^2／s和0．47m^2／s，水体流动缓慢，难以保证泻湖环境生态对水质的需求；当开通西通道时，泻湖内的水体整体运动明显增强，西侧水体的单宽流量在涨急和落急时分别达到1．02m^2／s和0．70m^2／s，西安路两侧大部分水体能够顺利进行交换，同时泻湖内的水体交换周期也明显缩短，约为2．61d。

英文摘要：

In this paper, a 2-D hydrodynamic mathematical model was established to stmutate tide mow- ment and to analyze the tide levels change process of Haiyang artificial lagoon. According to the simula ted results, the sea water exchange rate and the sea water half replacement period in the lagoon could be calculated. The results showed that, when the west channel did not open, the fluxes of the west side of lagoon were only 0.66m2/s and 0.47m2/s when flood tide and ebb tide, the water in the lagoon moved slowly, and it was difficult to guarantee the water quality requirements; whereas, when the west chan- nel opened, the water movement obviously enhanced, the fluxes reach 1.02m^2/s and 0.7m^2/s at the same time, most of the water participated in water exchange with , and the water exchange cycle also significantly shortened, about 2.61 days.