【作者】 王佳元； 匡翠萍； 黄永辉； 单云驰； 胡成飞；

【Author】 WANG Jia-yuan;KUANG Cui-ping;HUANG Yong-hui;SHAN Yun-chi;HU Cheng-fei;Department of Hydraulic Engineering, College of Civil Engineering, Tongji University;

【机构】 同济大学土木工程学院水利工程系；

【摘要】 首先利用MIKE21建立紫葡萄岛工程区及邻近海域二维潮流数学模型;通过实测流速、流向对潮流数学模型进行验证,模拟值与实测资料吻合较好;然后用验证后的模型预测紫葡萄岛对该海域潮流的影响,分析结果表明:紫葡萄岛的工程建设对该工程区外海的潮流动力影响甚微,仅在工程附近区域产生一定变化。紫葡萄岛东南侧流速增加明显,可达16%;西北侧由于连岛桥梁的阻碍作用,流速减小形成低流速区,一般小于0.04m/s;顺岸方向的两侧流速减小。紫葡萄岛口门及内部流速减小,利于船舶进出停靠。更多还原

【Abstract】 The offshore artificial island-the Purple Grape island-is being constructed in Beidaihe new development zone. To study the impact of the project on the tidal current, a 2D tidal current model was established based on MIKE21. After the model validation with field observations of flow velocity and direction, the verified model is applied to predict the influence of the project on current change after the project implementation. The comparison between the tidal flow before and after engineering demonstrates that the construction of artificial island has a certain effect on tidal flow in the project surrounding area, while the effect can be neglected in the open sea in front of the project. The velocity has a obvious increase at the southeastern part of the island, with a maximum increase up to around 16%, and a low velocity less than 0.04m/s appears in northwest of the island because of the impediment of the bridge connecting the island and shore. A large region of velocity reduction can be seen in the near shore area behind the island. Ships coming in and out the basin can be facilitated with low flow velocity due to the decreased flow within the entrance and internal basin of the island.更多还原