不同围填海方案对南黄海辐射沙脊群海域的冲淤影响研究

南京大学学报(自然科学版) ›› 2014, Vol. 50 ›› Issue (5): 679–686.

不同围填海方案对南黄海辐射沙脊群海域的冲淤影响研究

赵强1,2,*，曹维1，蔡燕红1

出版日期:2014-09-12 发布日期:2014-09-12
作者简介:(1.国家海洋局宁波海洋环境监测中心,宁波315040;2.中国海洋大学物理海洋实验室,青岛,266003)

Study on reclamation impact on sedimentary erosion and deposition in radial tidal sand ridge system in the South Yellow Sea

Zhao Qiang1, 2, Cao Wei1, Cai Yanhong1

Online:2014-09-12 Published:2014-09-12
About author:(1. Ningbo Marine Environment Monitoring Center, SOA, Ningbo, 305040, China;
2. Laboratory of Physical Oceanography, Ocean University of China, Qingdao, 266003, China)

摘要/Abstract

摘要： 本文采用MIKE21二维水动力模型模拟了南黄海辐射沙脊群海域的潮流形态，模拟结果与实测潮流基本一致。在此基础上，比较了三套不同围填海方案对工程附近区域的冲淤影响。从整体上看，三套方案都会对工程周边海域的海底冲淤产生明显影响。条子泥围填海工程后在其北部产生淤积，在东南部产生冲刷。东沙和高泥两座人工岛的建立使原本以弶港为中心扇形辐聚、辐散的潮流格局有所改变，潮流进出主要集中在西洋水道南端和黄沙洋水道西端这两条潮流通道，通道内流速增大，产生冲刷；而两人工岛东部和弶港东部海域产生淤积。基于目前的模拟结果，只建设高泥和东沙两座人工岛更有利于维持西洋水道和黄沙洋水道的畅通，对近岸港口资源具有保护作用。

Abstract: In order to study the reclamation impact on sedimentary erosion and deposition by reclamation projects in the radial tidal sand ridge system in the South Yellow Sea, the two-dimensional hydrodynamic model, MIKE21, was applied to simulate the tidal currents, and erosion and deposition were calculated using empirical formula. Then the sediment erosions and depositions caused by three different kinds of reclamation projects are calculated. Three cases of reclamation project were numerical tested. They were Tiaozini reclamation project (Case 1), Dongsha and Gaoni reclamation project (Case 2), and Case 3 was a combination of Case 1 and Case 2. All the three cases showed obvious impacts on the sedimentary erosion and deposition. In Case 1, sedimentary deposition occurred on the north of Tiaozini and erosion occurred on the south of it. In Case 2, the fan-shaped, Jianggang centered tidal current system was changed, and the tidal currents were constrained to the two water channels of Xiyang and Huangshayang, which induced velocity increasing and sedimentary erosion in the channels. While depositions occurred at the east of Dongsha and Gaoni. In Case 3, the erosion and deposition areas were similar to the combined impacts of the former cases. Based on the model results, Case 2 was the appropriate case for keeping the tidal channel unimpeded and protecting the harbor resources

赵强1,2,*，曹维1，蔡燕红1. 不同围填海方案对南黄海辐射沙脊群海域的冲淤影响研究[J]. 南京大学学报(自然科学版), 2014, 50(5): 679–686.

Zhao Qiang1, 2, Cao Wei1, Cai Yanhong1. Study on reclamation impact on sedimentary erosion and deposition in radial tidal sand ridge system in the South Yellow Sea[J]. Journal of Nanjing University(Natural Sciences), 2014, 50(5): 679–686.

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