决口海堤水波传播模拟和分析研究Ⅱ:2D传播  

Simulation and analysis of flood wave propagation in burst seawall Ⅱ:2D propagation

作　　者：王驰[1] 王红[1] 段子冰[1] 周正萍[1] 左其华[1] WANG Chi;WANG Hong;DUAN Zibing;ZHOU Zhengping;ZUO Qihua(Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]南京水利科学研究院

出　　处：《海洋工程》2019年第6期74-85,共12页The Ocean Engineering

基　　金：国家重点研发计划资助项目(2017YFC0405400)

摘　　要：应用经验证的SWASH数学模型,分析了海堤决口中心线沿线实测水深分布规律和保护区淹没水量与淹没面积。对不同特征水深进行验证,进而探讨不同波要素对不同形式的海堤决口堤后特征水深分布情况以及波浪传播距离与时间的关系;分析了物理模型试验中海堤决口宽度以及不同波要素对堤后洪水波演进的影响;计算了不同决口深度和宽度对洪水波传播的影响,建立堤后水体淹没水量和淹没面积分布公式。成果可供我国沿海城市和地区在风暴潮和台风浪作用下海堤决口风险图绘制参考。The verified SWASH mathematical model is used to analyze the measured water depth distribution along the center line of the seawall and the submerged water and submerged area.The water depths of different features are verified,and the relationship between the water depth distribution and the wave propagation distance and time of different types of seawall breakwaters is discussed.The width of the seawall and the different wave elements are analyzed in the physical model test.The influence of post-flood wave evolution and the influence of different depths and widths of the breach on the propagation of flood waves are calculated,and the formula for the distribution of submerged water and submerged area after the embankment is established.The results can be used as reference for the risk map of the seawall under the influence of storm surge and typhoon waves in the coastal cities and regions of China.

关 键 词：海堤决口 淹没深度 传播距离 淹没水量 淹没范围 

分 类 号：TV139.2[水利工程—水力学及河流动力学]