极限波高下人工沙坝的动力调整研究  

Study of Artificial Sand Bar Dynamic Adjustment on Limit Wave Height

作　　者：赵多苍[1] 拾兵[1] 宋朋远[1] 范菲菲[1] 

机构地区：[1]中国海洋大学工程学院,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2014年第6期97-102,共6页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(50879084)资助

摘　　要：基于人工沙坝影响波浪破碎的理论分析,采用极端高水位、设计高水位和0.00m水位下的极限波高作为入射波,对近岸人工沙坝进行了模拟试验,研究波浪动力对人工沙坝剖面的变形及其对岸滩养护的影响。结果表明:坝顶水深和沙坝高度之比h/d决定沙坝的稳定性,h/d较小时,沙坝能接近稳定;沙坝的变形与坝前波浪破碎有关,可用坝顶水深和临界水深之比h/hb判定波浪在沙坝上的破碎;近岸人工沙坝使波浪提前破碎,滩肩拓宽,使泥沙向岸输移大于向海输移,减小岸滩侵蚀区域,增大淤积范围。Based on theoretic analysis of the effect of artificial sand bar on wave breaker,the paper is an artificial sand bar model experiment, which studies the effect of artificial sand bar profile changes and seashores curing by extreme wave power, and employs limit wave height on the extreme high water level, design high water level and O. O0 m water level as the incident wave. The result shows that the ratio of dam crest depth to bar height （hid）decides the stability of sand bar stability , the bar can be stability when the ratio（hid）is low. There is an relationship between the profile changes of sand bar and wave breaker in the front of dam, and the waves breaker can be judged by the ratio of dam crest depth to critical depth （h/hb） ; Artificial sand bar in shore breaks wave in advance, broadens beach shoulder, makes sediment transport to shore greater than to the sea, reduces the area of beach erosion, and increases the region of beach deposition.

关 键 词：人工沙坝 极限波高 沙坝变形 岸滩养护 

分 类 号：P753[交通运输工程—港口、海岸及近海工程]