通州湾港区围填海工程起步方案比较

围填海工程在促进区域经济发展的同时会对周边海域滩槽形态、生态环境产生一定的影响。以通州湾港区起步工程为例，通过建立潮流数学模型，模拟南黄海辐射沙脊群海域的潮流形态。在此基础上，比较了两套不同围填海开发方案对工程区域滩面的冲淤影响。从整体上看，两套方案对工程周边海域的海底冲淤产生明显影响，但随着时间的推移趋于平衡。基于目前的模拟结果，先期实施离岸式的二港池更有利于维持小庙洪水道的畅通以及滩涂资源的保护。

Comparison on start scheme of reclamation engineering of Tongzhou Bay harbor

Reclamation engineering has a certain impact on the surrounding sea beach trough shape and the ecological environment while promoting regional economic development.Taking the start scheme of Tongzhou Bay harbor as an example,the tidal current model is established to simulate the tidal current pattern of the radiated sand ridge group in the South Yellow Sea.On this basis,two different reclamation schemes are compared to the sedimentary erosion and deposition of floodplains in the project area.On the whole,the two schemes have obvious effect on the sedimentary erosion and deposition of the sea area around the project,but they tend to balance as time goes on.Based on the current simulation results,the second pool of the early implementation which is off the shore is more conducive to maintaining the flow of Xiaomiaohong channel and tidal resources protection.