静态平衡岬湾理论的研究及其在海南沿岸的应用

发布时间：2018-04-18 08:37

本文选题：沿岸流 + 沿岸输沙　；参考：《天津大学》2014年硕士论文

【摘要】：随着人类对海洋的利用和开发，合理设计海岸工程，正确评估建筑物对海岸造成的影响以避免对海岸资源造成损害已成为愈发重要的课题。本文借助数学工具和数学方法来预测工程对海岸的影响，并进行分析和评价。本文首先从引起岸线演变的主要原因入手，对工程区域建立了近岸水动力数学模型，通过计算沿岸流场来分析近岸泥沙的运动规律，并计算出了沿岸输沙率。利用静态平衡岬湾经验公式和数值模拟对岸线的演变进行预测，与沿岸流和沿岸输沙计算结果相结合，以工程对海岸的影响为主要研究内容。在工程应用方面，对国电海南西南部电厂厂址北移方案配套码头工程的近岸水动力进行数值模拟，模拟了沿岸流场和近岸泥沙输移场，对沿岸流场进行分析，给出了岸线演变的原因。利用静态平衡岬湾抛物模型预测了工程后的平衡岸线，并与数值模拟的海岸线进行对比。结果表明海岸线的变化与沿岸流和沿岸输沙的计算结果是一致的。通过对比三个方案的淤积程度，对方案的合理性给出评价，并且为方案的比选提供一定的科学依据。
[Abstract]:With the utilization and development of the ocean, it has become more and more important to design the coastal engineering and evaluate the influence of the buildings on the coast to avoid the damage to the coastal resources.In this paper, mathematical tools and methods are used to predict, analyze and evaluate the effects of engineering on the coast.This paper starts with the main causes of the evolution of the shoreline, establishes the hydrodynamic mathematical model for the engineering area, analyzes the motion law of the coastal sediment by calculating the coastal current field, and calculates the sediment transport rate along the coast.The static equilibrium Cape Bay empirical formula and numerical simulation are used to predict the evolution of shoreline, which is combined with the calculation results of coastal current and coastal sediment transport. The main research content is the influence of engineering on the coast.In the aspect of engineering application, numerical simulation of coastal hydrodynamics of the matching wharf project of southwestern Hainan Power Plant site is carried out, and the coastal flow field and sediment transport field are simulated, and the coastal flow field is analyzed.The reasons for the evolution of shoreline are given.The equilibrium shoreline was predicted by using the static equilibrium Cape Bay parabolic model and compared with the simulated shoreline.The results show that the variation of shoreline is consistent with the calculated results of coastal currents and coastal sediment transport.By comparing the siltation degree of the three schemes, the rationality of the schemes is evaluated, and the scientific basis for the comparison and selection of the schemes is provided.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV148

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