沙质岸滩形态对海平面变化响应的数值研究  

Numerical study of sandy beach profile induced by change of sea-level

作　　者：蒋昌波[1,2,3] 黄琼[1,4] 伍志元[1,2,3] 陈杰[1,2,3] 邓斌[1,2,3] 

机构地区：[1]长沙理工大学水利工程学院,湖南长沙410004 [2]水沙科学与水灾害防治湖南省重点实验室,湖南长沙410004 [3]长沙理工大学水科学与环境工程国际研究中心,湖南长沙410004 [4]广州正见建筑工程设计有限公司,广东广州510220

出　　处：《水动力学研究与进展（A辑）》2017年第1期81-87,共7页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金资助项目(51239001;51179015;51409022);交通运输部应用基础研究项目(2015319825080)~~

摘　　要：该文基于XBeach模型开展海平面上升导致波浪作用强度增加对岸滩演变的影响数值计算研究,通过经典波浪水槽实验及现场观测数据对模型进行验证,结果表明该模型可以准确地模拟波浪向岸传播过程中波高及流速的变化,能较好地预测波浪作用下岸滩的冲淤演化趋势,可用于岸滩演变冲淤变化数值计算研究。在Delta Flume实验的基础上,探讨海平面变化与岸滩演变之间的关系,结果表明,海平面上升和静水面位置变化是引起海岸动力作用强度不同的原因,在波浪作用不同的时间段,海平面上升直接淹没导致的岸线蚀退和海岸动力强度变化导致的岸线蚀退分别占据岸线蚀退总量的主导地位。This paper was mainly based on Xbeach model to study the numerical simulation of beach profile evolution and response to sea-level change under waves. This model was verified by wave flume experiment and field observation data, which indicated that this model could accurately simulate changes of wave height and flow velocity in the wave propagation process, also could well predict beach evolution trend and be applied to the coastal erosion and deposition evolution numerical study. On the foundation of Delta Flume experiment we studied the sea level＇s influence on beach profile＇s morphology change. It showed that because of the change of sea level rise and the position of still water level, the coast hydrodynamic factors had changed. In different moment, shoreline retreat due to sea level rise directly submerged coastal and increasing hydrodynamic respectively occupy the dominant position of total amount of coastal erosion.

关 键 词：海平面变化 岸滩形态 数值模拟 XBeach 

分 类 号：TV148[水利工程—水力学及河流动力学]