“韦帕”台风连云港海域三维潮流、泥沙数值模拟

3D numerical simulation of tidal current and sediment during Typhoon Wipha in Lianyungang sea area

大风天航道骤淤是连云港海域深水航道建设的关键问题之一。采用三维风浪、潮流及泥沙数学模型,对"韦帕"台风期间连云港海域的风浪、潮流及泥沙进行了模拟研究,模型计算值与实测值吻合良好;对"韦帕"台风期间连云港海域的水位变化、潮流与含沙量的空间分布特征等进行分析,并利用该模型对连云港深水航道二期工程台风期间航道回淤进行了模拟预测,结果表明,在类似"韦帕"台风的大风作用下,连云港二期航道没有发生泥沙骤淤碍航现象。

The sudden siltation is one of the key issues in the construction of Lianyungang waterway.A 3Dnumerical model which contains modules of wind, wave, tide and sediment is established to simulate and study thewind wave, tide and sediment during Typhoon Wipha in Lianyungang sea area.The results are in high coincidencewith the observed data.The variation of water level and the characteristics of spatial distribution of tide and sedimentin the said waters during Typhoon Wipha are also analyzed herein.The model is then used to predict the siltationduring the construction of Phase II Lianyungang waterway project in typhoon period. The result shows that thenavigation obstruction due to sudden siltation would not occur in Lianyungang waterway under the impact of a strongwind like Typhoon Wipha.