东澳岛海域防波堤工程波浪分布特性数学模型研究  

Mathematical modeling of wave distribution characteristics of breakwater project in Dong'ao Island sea area

作　　者：陈星 徐雪松 朱峰 CHEN Xing;XU Xuesong;ZHU Feng(Guangdong Provincial Transportation Planning&Research Center,Guangzhou 510101,China;Changjiang Survey Planning Design and Research Co.,Ltd.,Wuhan 430010,China;CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510290,China)

机构地区：[1]广东省交通运输规划研究中心,广东广州510101 [2]长江勘测规划设计研究有限责任公司,湖北武汉430010 [3]中交第四航务工程勘察设计院有限公司,广东广州510290

出　　处：《水运工程》2024年第8期10-16,共7页Port & Waterway Engineering

摘　　要：为定量论证规划防波堤建设方案对珠海港万山港区东澳岛客货运码头工程的掩护效果,基于SWAN波浪数学模型和中国南海历史台风浪资料的统计分析结果,对近岸波浪的传播变形进行计算。采用Boussinesq方程数学模型分析正常大浪条件下和极端大浪条件下不同防波堤规划方案所产生的港内特征点处波浪要素。结果表明:1)万山列岛对SE向外海波浪具有掩护效应。因此E向外海波浪是影响整个港域波浪条件的控制工况。2)在2 a一遇波浪作用下,防波堤方案1可使北岸各点H_(4%)减小约40%,南岸各点H_(4%)减小约50%,N_(6)点可作业天数由无掩护条件下的29.9 d减小至2.6 d;防波堤方案2由于加强湾口北侧的掩护,因此北岸波高降低超过50%,南岸波高降低达65%,N_(6)点可作业天数进一步降低至0.7 d。3)在50 a一遇波浪作用下,防波堤方案1可使北岸各点H_(13%)减小30%,南岸各点H_(13%)减小40%;防波堤方案2可使北岸各点H_(13%)减小40%,南岸各点H_(13%)减小60%。因此规划方案2对港域的掩护效果优于方案1。To quantitatively demonstrate the shielding effect of the planned breakwater construction scheme on the Dong'ao Island passenger and freight terminal project in Wanshan Port Area of Zhuhai Port,the propagation deformation of nearshore waves is calculated based on the SWAN wave mathematical model and the statistical analysis results of historical typhoon wave data in the South China Sea.The Boussinesq equation mathematical model is used to analyze the wave parameters at the characteristic points in the port produced by different breakwater planning schemes under normal strong wave conditions and extreme strong wave conditions.The results show that:1)the Wanshan islands have a shielding effect on the SE direction sea waves.Therefore,the E-direction offshore waves are the control condition affecting the wave distribution in the whole port area.2)Under the action of waves with a return period of 2 years,breakwater scheme 1 can reduce H_(4%) at each point on the north bank by about 40%,and by about 50%on the south bank,the number of working days at point N_(6) can be reduced from 29.9 days without breakwater to 2.6 days.Breakwater scheme 2 strengthens the cover on the north side of the bay mouth,resulting in a reduction of over 50%in wave height on the north bank and about 65%in wave height on the south bank.The working days at point N_(6) are further reduced to 0.7 days.3)Under the action of 50 year return period wave,the breakwater scheme 1 can reduce H_(13%)at each point on the north bank by 30%and by 40%on the south bank.Breakwater scheme 2 can reduce H_(13%) at each point on the north bank by 40%and by 60%on the south bank.Therefore,breakwater scheme 2 has a better covering effect on the port area than scheme 1.

关 键 词：东澳岛海域 防波堤工程 波浪数学模型 设计波浪要素 

分 类 号：U65[交通运输工程—港口、海岸及近海工程]