围海工程带来的潮流变化

Change of tidal current brought by reclamation works

本文运用数值模拟方法对围填海工程造成的潮流变化进行研究与探讨,所使用的数学模型为具有自主知识产权的天津大学水流泥沙数学模型软件。文中以天津港与曹妃甸港的中间海区为例,分析了目标海域和其它海域的潮流特征变化,着重研究围填海工程对渤海湾造成的联合影响。最后得出几点结论:1围海工程使得渤海湾沿岸海区的潮流运动呈现出不规则的变化;2围海工程对渤海湾近岸海区的影响表现为流速的增大和潮流动力的增强,对离岸海区的影响则相反;3单项填海工程对海湾内整体潮流场的影响不大。

This paper studied and explored the tide change caused by reclamation project by used of nu-merical simulation method.The applied mathematical model is a software of mathematical model of water flow and sediment by Tianjin University with intellectual property right.Taking the middle sea area be-tween Tianjin port and Caofeidian port for example,it analyzed the change of tide characteristics in target sea area and other area, and mainly focused on the combined effect of reclamation works on Bohai bay. Finally come to some conclusions:the reclamation works make tide movement along the waters of Bohai Bay appear irregular change;the impact of coastal reclamation on coastal waters of Bohai Bay presents the performance of the increase of flow rate and the enhancement of tide power,and the impact of that in the offshore water is contrary;a single reclamation work has little effect on the overall trend of field in the Gulf.