直墙结构物对台礁礁坪上规则波传播特性的影响  

The influence of vertical-wall structure on monochromatic wave transformation characteristics over the platform reef

作　　者：朱干城 任冰[1] 王永学[1] 邱大洪[1] ZHU GanCheng;REN Bing;WANG YongXue;QIU DaHong(State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室

出　　处：《中国科学：技术科学》2019年第8期919-929,共11页Scientia Sinica(Technologica)

摘　　要：在岛礁的礁坪上建设水工结构物对其所在水域的水动力环境会产生很大的影响.本文通过二维物理模型试验,研究了在理想形状的礁坪上建设直墙式水工结构物对规则波在礁坪上的变形、破碎和增水过程的影响.实验中测定了不同淹没水深和入射波况下礁坪上的波面高度和波浪增水变化过程,分析了直墙结构物对上述水动力过程的影响,并将实验数据与前人的实验结果进行比较分析.基于伪周期孤立波理论对Gourlay提出的礁坪上波浪增水计算公式进行改进,使改进的相对波浪增水值与淹没水深关系式与本文实验值吻合得更好.Building hydraulic structures on reef-top can make a huge impact to hydrodynamic environment of deep-sea coral reef. The influences of vertical-wall structure on monochromatic wave transformation characteristics over the deep-sea coral reefs are studied by two-dimensional laboratory experiments. Wave surface, wave height and wave set-up on the reef-top are measured under various submerged depths and incident wave conditions. The effects of vertical-wall structure on the hydrodynamic processes are studied, the experimental results are also compared with former research results. Including mass transport and the nonlinearity of wave breaking, Gourlay’s theoretical relationship between the set-up and the submergence on the reef-top is corrected. A good agreement between experimental results and corrected theoretical relationship is obtained.

关 键 词：珊瑚礁 直墙结构物 辐射应力 波浪增水 

分 类 号：P75[天文地球—海洋科学] P731.22