田湾核电站海域潮流泥沙数值模拟研究

Numerical modeling of tidal current and sediment movement in the coastal area near Tianwan Nuclear Power Station

建立了基于不规则三角形网格的考虑波浪及其破碎作用的潮流泥沙数学模型,在对模型进行充分验证的基础上,对田湾核电站海域的潮流泥沙进行了数值模拟,对潮流场泥沙场特征进行了分析;对连云港港口扩建(旗台港区建设)规划方案对田湾核电站已建取水工程的影响进行了数值模拟研究,计算了取水明渠口门附近岸滩的冲淤变化及取水口设计水深等深线的位移。研究结果表明:连云港港口扩建后,已建的田湾核电站取水明渠口门附近水域变成泥沙淤积环境,滩面将会淤高,设计的取水口门水深等深线将会外移,核电站正常取水将会受到影响。

Mathematical models for tidal current,sediment movement and seabed erosion and deposition with taking into account the effect of wave and wave breaking are set up with irregular triangular grids.On the basis of full validation and verification of the models,the tidal flow field and suspended sediment field are numerically simulated,and their characteristics are analyzed.Then,the impacts of the extension project（Qitai harbour construction） of Lianyungang Port on the constructed water intake project of Tianwan Nuclear Power Station are numerically studied,and the seabed erosion and disposition near the water intake and the displacement of the water intake isobath are calculated.The study results show that the coastal waters near the water intake will become a sediment deposit-promoting environment,the seabed will rise and the isobath at the water intake will move outward after the construction of Lianyungang Port＇s extension project,and the water intake of Tianwan Nuclear Power Station will also be affected by the project.