潜堤对平均沿岸流及波高和增减水的影响  

Influence of Submerged Breakwater on the Mean Longshore Currents and Wave Height and Water Level Fluctuation

作　　者：谢栩鹏 沈良朵 XlE Xu-peng;SHEN Liang-duo(School of Port ＆ Transportation Engineering of Zhejiang Ocean University,Zhoushan 316022,China)

机构地区：[1]浙江海洋大学港航与交通运输工程学院,浙江舟山316022

出　　处：《浙江海洋大学学报（自然科学版）》2018年第4期332-337,共6页Journal of Zhejiang Ocean University：Natural Science

基　　金：国家自然科学基金(11602222);浙江海洋大学科研启动经费资助(11185010817)

摘　　要：潜堤是重要的水工建筑物,了解掌握潜堤对沿岸流及波高和增减水的影响相当重要。以梯形潜堤为实验对象,利用设置潜堤以及变换潜堤的离岸距离来分析潜堤对波高和增减水及平均沿岸流的影响。通过分析得出:设置潜堤会使得波浪破碎后波高分布有向岸偏移的趋势,同时会使得波浪由减水转为增水的过程曲线变陡,但该趋势不如流速分布变化趋势明显。平均沿岸流变化趋势与之类似,且更易观察到。Submerged breakwater is an important hydraulic structure, so it is necessary to master the in- fluence of longshore currents, wave height and water level fluctuation about submerged breakwater. Based on the longshore current experiment in harbor, taking the trapezoid submerged breakwater as the research object, this paper analyzes the influence of submerged breakwater on the mean longshore current, wave height and wa- ter level fluctuation by not setting submerged breakwater and changing the position of submerged breakwater. The results show that submerged breakwater could cause wave height which after wave breaking close to the shore. Meanwhile, which could cause that the curve of water level fluctuation steeper, but its not obvious than the change of current speed. The trend of mean longshore currents is similar, what＇s more, it is more easily ob- served.

关 键 词：潜堤 潜堤影响 波高 增减水 平均沿岸流 

分 类 号：U656.3[交通运输工程—港口、海岸及近海工程]