生态海堤多级平台消浪特性及越浪量计算  

Wave dissipation characteristics and wave overtopping calculation of multi-stage platforms of ecological seawall

作　　者：刘晓建 侯堋 陈文龙 朱小伟 陶爱峰[3] 郭辉群 王强 LIU Xiaojian;HOU Peng;CHEN Wenlong;ZHU Xiaowei;TAO Aifeng;GUO Huiqun;WANG Qiang(Pearl River Water Resources Research Institute,Ministry of Water Resources,Guangzhou 510611,China;Research Center of Engineering Technology of the Pearl River Coast and Estuary of the Ministry of Water Resources,Guangzhou 510611,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]珠江水利委员会珠江水利科学研究院,广东广州510611 [2]水利部珠江河口海岸工程技术研究中心,广东广州510611 [3]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《河海大学学报（自然科学版）》2024年第4期70-77,84,共9页Journal of Hohai University(Natural Sciences)

基　　金：国家重点研发计划项目(2021YFC3001000);广东省基础与应用基础研究基金项目(2021A1515110428);广东省级促进经济高质量发展海洋专项项目(GDNRC[2021]41);广州市基础与应用基础研究项目(202102021286);水利部重大科技项目(SKR-2022036);海岸灾害及防护教育部重点实验室(河海大学)开放基金项目(202209);华东师范大学河口海岸学国家重点实验室开放课题项目(SKLEC-KF202110);水沙科学与水灾害防治湖南省重点实验室开放基金项目(2020SS02)。

摘　　要：针对生态海堤多级平台消浪设计依据缺乏、人工经验设计效率低且难以最大限度发挥消浪效能的问题,通过构建耦合高精度水气界面捕捉算法的三维数学模型,开展了生态海堤多级平台消浪特性及越浪量计算研究,并基于多级堤身结构(平台宽度、平台高度、堤防高度)不同组合下的越浪规律,提出了生态海堤越浪量计算公式。结果表明:受多级平台逐级抬高影响,堤身上覆水厚度变小造成波浪逐层浅化发生连续破碎耗能,同时多级平台迎水面分级阻挡浅化波传播,造成波浪逐级反射衰减;多级平台宽度和高度共同控制着堤顶越浪,越浪量相同情况下迎水面横向堤身宽度与纵向堤身高度变化值存在定量互换关系。In order to solve the problems of the lack of design basis,low efficiency of artificial experience design and difficulty to maximize the wave dissipation of new multi-stage platform of ecological seawall,a three-dimensional mathematical model coupled with the high-precision capture algorithm of water-gas interface was built.Then,this model was used to study the wave dissipation characteristics and wave overtopping calculation of multi-stage platform of ecological seawall.Considering the overtopping laws of wave under different combinations of dike structure(step width,step height and dike height),a formula for calculating the wave overtopping of multi-stage platform of ecological seawall is put forward.The results show that with the gradual elevation of multi-stage platforms,the thickness of overlying water on the breakwater becomes smaller,resulting in the energy dissipation of continuous breaking of waves.At the same time,the multi-stage platforms block the propagation of shallow waves by stages,forcing the waves to reflect step by step and attenuate.The width and height of the multi-stage platform jointly control the overtopping of the breakwater.It is found that the longitudinal height and transverse width of the multi-stage platform have a quantitative exchange relationship under the same overtopping situation.

关 键 词：生态海堤 多级平台 波浪运动 消浪特性 越浪量 三维数学模型 

分 类 号：TV139.2[水利工程—水力学及河流动力学]