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以东吾洋内湾海域环境为研究对象,基于验证的MIKE21中的HD和MT模型,计算分析了单一建设仙东渔港工程、单一建设关门渔港工程和两个渔港工程同时存在三种情景下东吾洋海域潮流场和泥沙场的变化。结果表明,当单一建设关门渔港工程时,流速增幅区域面积最大,关门水道附近泥沙强冲刷区域面积最大;当关门和仙东渔港工程同时存在时,流速增幅及泥沙强冲刷区域面积次之;而当单一建设仙东渔港工程时,流速增幅及泥沙强冲刷区面积最小。相较于其他两种情景,当单一建设关门渔港工程时,关门水道附近水动力条件最强,高流速水体导致沉积在底部的泥沙产生紊动使得水质变得浑浊,对周围藻类植物及浮游动物的生长产生极大的负面作用,也会大大降低紫菜海带养殖区及网箱养殖区的产量,另外对大黄鱼产卵区的分布也会造成很大的冲击。综合考虑,仙东渔港建设较为合理,而关门渔港的选址存在问题。
Based on the HD and MT models of MIKE21 verified by the validation, the author has calculated and analyzed the results of the construction of the single construction xindong fishing port project, the single construction closed fishing port project and the two fishing port projects simultaneously in three scenarios. Changes of Tidal Current and Sediment Fields in the Ocean. The results show that when the single project closes the fishing port project, the area of velocity increase area is the largest, and the area with strong sediment erosion near the closed channel is the largest. When the closure gates and the Xian Dong fishing port project coexist, the flow rate increases and the area with strong sediment flushing takes the second place ; And when a single construction of cents East fishing port project, the rate of increase and strong sediment scouring the smallest area. Compared with the other two scenarios, the hydrodynamic conditions near the closed waterway are the strongest when a single building closes a fishing port project. Turbulence caused by sediment deposited at the bottom due to high velocity of water causes turbidity of the surrounding algae and plankton Animal growth has a tremendous negative effect, will greatly reduce the seaweed kelp culture area and the cage culture area yield, in addition to the distribution of large yellow croaker spawning area will cause a great impact. Taken together, the construction of the fishing port in Xian Dong is more reasonable, and there is a problem with the siting of the closed fishing port.