波浪作用下堤前沙质海床冲淤形态  

Scouring Patterns in Front of Breakwaters Under the Action of Different Waves

作　　者：高学平[1] 张亚[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2004年第5期459-465,共7页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(59979019).

摘　　要：通过水槽试验,研究了不规则破碎波作用下不同水深、不同波谱、不同粒径和不同海床坡度情况下堤前沙质海床的冲淤形态,按照波作用和泥沙粒径的相对关系,将其分为5种类型:堤前冲刷Ⅰ型、堤前冲刷Ⅱ型、堤前冲刷Ⅲ型、堤前淤积Ⅰ型和堤前淤积Ⅱ型,并分析了各种冲淤形态的形成过程.总结和比较了不同波浪作用引起的堤前海床冲淤形态之间的异同,从入射波组成的角度,揭示了不规则破碎波作用下堤前海床冲淤形态与立波及规则破碎波作用下冲淤形态的关系.The scouring patterns of sandy bed in front of breakwaters under the action of irregular broken clapotis were investigated by experiments conducted in a wave flume on conditions of different water depths, different wave spectrum, different sand size and different seabed slop. On the basis of the experimental data, the scours and depositions could be classified into five typical patterns depending on the relationship between wave condition and grain size, defined as scouring typeⅠ, scouring typeⅡ, scouring typeⅢ, depositing typeⅠ and depositing typeⅡ. And their formation processes were analyzed separately. Different scouring patterns caused by regular standing waves, regular broken clapotis and irregular standing waves were summarized and compared with that caused by irregular broken clapotis. Considering constituents of incident waves, the relationship among different scouring patterns caused by irregular broken clapotis and standing waves and regular broken clapotis were presented.

关 键 词：不规则破碎波 沙质海床 冲淤形态 防波堤 波浪作用 规则破碎波 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程] P512.32[交通运输工程—船舶与海洋工程]