洋山深水港区码头导流堤工程对附近海域流场的影响

Impact of Diversion Dike Project in Yangshan Deepwater Port Upon Flow Field in Surrounding Seas

为了研究上海国际航运中心洋山深水港区四期工程导流堤工程对周边海域流场的影响,采用MIKE21里面的HD模块构建杭州湾及长江口海域整体潮流数值模型,分别对导流堤建成前后附近海域流场进行数值模拟,分析导流堤建成后工程附近海域流场特征。研究表明:导流堤建成后,四期码头前沿较大范围的回流区和缓流区基本消失,导流堤和四期码头前沿海流流向基本与码头走向保持一致,流速有所增大,导流堤的建设使码头前沿海流得到很好的改善,起到了归顺潮流的作用,有利于码头前沿水深的维持及船舶靠离港的安全。

To study the impact of the fourth phase diversion dike project in Yangshan deepwater port upon flow field in surrounding seas, this paper built a numerical simulation with the large computational domain covering Hangzhou Bay and the Yangtze River estuary by using MIKE21 HD module, simulated the flow field and analyzed the flow field characteristics of the waters near the project before and after the completion of the diversion dike. The studies showed that, after the completion of the diversion dike, a large range of recireulation zone and slow flow area disappears before the quay, the direction of diversion dike and current before the quay was basically consistent with the quay, the current speed had increased, the construction of the diversion dike made currents well improved before the quay, which made the currents passing well, in favor of maintaining depth before the quay and the se- curity when ship berthing and departures.