鱼山围垦对南北深槽发展及港口岸线利用的影响

Influence of Yushan Islands reclamation on growth of south and north deep channels and development of port shoreline

鱼山已建围垦工程产生的水动力变化引起岛区附近海床的调整重塑。对工程前、后实测水下地形资料进行对比,并对潮流泥沙数学模型成果进行分析。结果表明岛区南北两侧深槽进一步增深发展,近岸局部发生淤积。海床冲淤发展趋势有利于深漕区码头水域的水深维护,并提升了岸线前沿水深条件,有利于后续高等级泊位的开发建设,但同时也增大了近岸码头区水深维护和西侧后续围堤建设的难度。

The existing Yushan Islands reclamation has caused the hydrodynamic change and reformed the surrounding seabed.By comparison of the bathymetry before and after the construction,and referring to the numerical model results,we know that the south and north deep water channels of the islands area further grow,and siltation occurrs in part of the nearshore area.The bathymetric evolution leads to a positive influence on the port water depth maintenance in the deepwater area,improves the water depth condition in front of the coastline,and contributes to the future construction of large quay berths.However,it increases the difficulty of the water depth maintenance in the nearshore berth area and the further reclamation on the west area at the same time.