近海人工岛及沙坝工程与潮流的响应特征研究

发布时间：2018-06-26 10:33

本文选题：人工岛 + 人工沙坝　；参考：《水动力学研究与进展(A辑)》2017年02期

【摘要】：北戴河新区位于最具发展潜力的环渤海经济圈中心地带,为满足旅游业发展需要而建的人工岛和保护旅游海滩而建的人工沙坝对近海潮流动力有不同程度的影响。该文基于MIKE21 FM模块通过大、中、小模型三层嵌套的方式建立洋河-葡萄岛近岸海域潮流数学模型,研究分析人工岛及沙坝工程建设前后的潮流动力变化特征,得到下列主要结论:工程建设后研究区域的主体潮流特征仍为顺岸往复流,流速变化量涨潮大于落潮;人工岛工程对流速场的影响范围和程度均明显大于沙坝工程,其中人工岛工程引起的流速变化量是沙坝工程的4倍;人工岛的建设使其内部形成一个相对封闭的水域,流速近乎为零,而养滩工程区在两侧水工建筑物和水下人工沙坝的掩护作用下流速基本减小至0.10 m/s以下。
[Abstract]:Beidaihe New area is located in the center of Bohai Rim Economic Circle with the most potential development. Artificial islands built to meet the needs of tourism development and artificial sand dams built to protect tourist beaches have different effects on offshore tidal current dynamics. Based on MIKE21 FM module, the mathematical model of tidal current in the coastal area of Yanghe Grape Island is established by three layer nesting of large, medium and small models, and the characteristics of dynamic change of tidal current before and after the construction of artificial island and sand dam are studied and analyzed. The main conclusions are as follows: after the construction of the project, the main tidal current characteristics of the study area are still the reciprocating flow along the shore, the variation of velocity is greater than that of the falling tide, and the influence of artificial island engineering on the velocity field is obviously larger than that of the sand dam project. The change of velocity caused by artificial island project is four times that of sand dam project, and the construction of artificial island makes it form a relatively closed water area with a velocity of nearly zero. However, the velocity of water flow in Yangtan area is reduced to less than 0.10 m / s under the cover of hydraulic structures and underwater artificial sand dams on both sides.
【作者单位】：上海海洋大学海洋科学学院;同济大学土木工程学院水利工程系;上海市水利工程集团有限公司;河北省地矿局秦皇岛矿产水文工程地质大队;
【基金】：中央分成海域使用金项目(QHY-12)~~
【分类号】：P731.2;P75

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