中文摘要：

基于开源软件TELEMAC-2D建立了台州湾近海潮汐潮流数值模型，对台州湾浅海滩涂大规模围垦前（1984年）和围垦后（2013年）的潮汐潮流进行了模拟计算。从主要分潮潮波分布、潮流场、高低潮位和椒江河口纳潮量4个方面探讨了台州湾浅海滩涂围垦对周边水动力特征的影响。结果表明：滩涂围垦工程对水动力特征的影响局限于围垦区附近水域。围垦后，海域M2分潮波振幅减小，且潮波向岸传播的速度减慢；围垦区附近海域涨落急流速大幅度降低，涨潮流向北偏转，落潮流向南偏转；海域大潮高潮位呈现一定程度的降低，大潮低潮位基本不变；椒江河口纳潮量有较大程度的减少。

英文摘要：

Based on an open source hydrodynamic model （TELEMAC-2D）, a two-dimensional mathematical model for tide and tidal currents in offshore areas of the Taizhou Bay is developed in this study. This model is employed to simulate the tides and tidal currents before and after the tidal flat reclamation （in 1984 and 2013 respectively）. The effect of large-scale reclamation projects of tidal flats on the hydrodynamic characteristics in offshore areas of the Taizhou Bay are discussed from four aspects, including the main tidal constituent, tidal current field, high tidal level and tidal prism. The results of numerical simulations show that the influence on hydrodynamic characteristics is confined to the waters near the project area. After the tidal flat reclamation, the amplitude of M2 tide decreases, and the propagation velocity of tidal waves decelerates landward. The maximum velocities of the flood and ebb currents reduce significantly around the reclamation areas. The direction of flood currents deflect northward while those of ebb deflect southward. The high tidal level of spring tide reduces to some extent, but the low tidal level of spring tide has almost no change. Meanwhile, it is worth noting that the tidal prism importing of Jiaojiang River Estuary decreases.