洋山港区四期工程对周边海底地形的影响  

The influence of the fourth phase of Yangshan Port Area project on the surrounding seabed topography

作　　者：赵思佳 陈刚 Zhao Sijia;Chen Gang(He'nan College of Surveying and Mapping,Zhengzhou He'nan 450001,China)

机构地区：[1]河南测绘职业学院,河南郑州450001

出　　处：《环境与发展》2024年第4期38-41,共4页Environment & Development

摘　　要：围填海工程建设中周边海底地形变化是开展海岸工程开发建设的关键技术问题,有利于海洋环境保护及资源开发利用。本研究根据2010—2020年洋山港区四期工程实测的海底地形资料,分析了该工程施工前(2010年)、施工中(2013年)和施工后(2020年)周边海底地形的变化特征。结果表明:由于外侧海堤线的阻挡作用,洋山港区四期工程西围堤以西海域大部分区域为淤积区;由于堤线的拉直挑流作用,外侧海堤前沿距码头前沿以南350m的范围内主要为冲刷区,距码头前沿以南350m的范围外,为淤积量值较小的淤积区;颗珠山南部海域,除了局部出现冲刷外,大部分区域为淤积区,且淤积量值较大。总体来看,该码头工程对周边海域海底地形影响属于轻微级,施工后周边海底地形影响较小。The change of the surrounding seabed topography is a key technical problem in coastal engineering de⁃velopment and construction,which is conducive to Marine environmental protection and resource development and utilization.Based on the measured submarine topography data of the fourth phase of Yangshan Port Area project from 2010 to 2020,this study analyzes the variation characteristics of the surrounding submarine topography before(2010),during(2013)and after(2020)construction of the project.The results show that most of the sea area west of the west embankment of the fourth phase of Yangshan Port Area is a silting area due to the blocking effect of the outer seawall line.Due to the straightening and lifting action of the levee line,the outer seawall front is mainly a scour area 350m south of the pier front,and the outer area 350m south of the pier front is a siltation area with small siltation value.In the southern sea area of Kezhushan,except for local scour,most of the area is a siltation area,and the value of siltation is large.In general,the wharf project has a slight impact on the seabed topography of the surrounding sea area,and the impact on the seabed topography of the surrounding sea area after construction is small.

关 键 词：围填海 洋山港区 海底地形 变化特征 影响 

分 类 号：X822.3[环境科学与工程—环境工程]