红树林对规则波作用下岸滩剖面变化影响实验研究

发布时间：2018-06-02 12:50

本文选题：规则波 + 红树林　；参考：《热带海洋学报》2017年01期

【摘要】：红树林广泛分布于我国南方沿海地区,可有效减小波浪对岸滩的破坏,研究其在规则波作用下对岸滩变化的影响具有重要意义。基于波浪水槽实验,采用PVC圆管模拟红树林,选取无黏性沙堆砌而成的1/10~1/20组合坡概化岸滩。实验结果表明,在规则波作用下,红树林的存在对岸滩剖面变化产生了较大影响;并分析了规则波波陡、植物分布密度和排列方式对岸滩剖面变化的影响。基于实验数据,建立了在实验条件下的岸滩冲刷坑尺度、淤积沙坝尺度、最大冲刷深度、最大淤积高度与规则波波陡、红树林的分布密度和排列方式之间的关系式,结果呈幂指数函数关系。揭示了岸滩剖面变化与规则波水动力特性、红树林、泥沙颗粒和岸滩坡度之间的联系。引入植物综合系数,预测给定规则波波陡和波长情况下的岸滩冲淤演变特征值,为海岸生物防护工程的建设提供科学依据。
[Abstract]:Mangroves are widely distributed in the coastal areas of southern China, which can effectively reduce the damage caused by waves, and it is of great significance to study the effects of mangroves on shoreline changes under the action of regular waves. Based on the wave flume experiment, the mangrove was simulated by PVC pipe, and 1 / 10 / 1 / 20 composite slope of unviscous sand was selected. The experimental results show that the existence of mangroves has a great influence on the shoreline profile under the action of regular waves, and the effects of regular wave steepness, plant density and arrangement on shoreline profile changes are analyzed. Based on the experimental data, the relationships between shoal scour pit scale, silt sand dam scale, maximum scour depth, maximum siltation height and regular wave steepness, distribution density and arrangement of mangroves are established. The results show a power exponential function relationship. The relationship between beach profile variation and regular wave hydrodynamic characteristics, mangrove, sediment particles and shoreline slope is revealed. Plant comprehensive coefficient is introduced to predict the characteristic values of shoreline erosion and siltation evolution under the given regular wave steepness and wavelength, which provides a scientific basis for the construction of coastal biological protection engineering.
【作者单位】：长沙理工大学水利工程学院;水沙科学与水灾害防治湖南省重点实验室;湖南水运投资建设集团有限公司;中建港务建设有限公司;
【基金】：国家自然科学基金重点项目(51239001);国家自然科学基金项目(51409022) 湖南省教育厅科研资助项目(13B130,YB2015B034) 水利部水科学与水工程重点实验室开放研究基金(YK914013) 港口航道泥沙工程交通行业重点实验室开放基金项目湖南省研究生科研创新项目(CX2015B360) 交通运输部应用基础研究项目(2015319825080)~~
【分类号】：S718.5;P737.1

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