摘要
老虎石海滩的海滩养护工程包含三段滩肩补砂和两个吹填的水下沙坝式潜堤.采用软件Mike 21建立老虎石2维潮流和波浪数学模型.根据2011年水文波浪实测资料对数学模型进行了验证和计算效率评价,评价结果表明计算的潮位和潮流过程与实测值吻合较好,精度较高.重点研究了海滩养护对其近岸区域潮流和波浪的影响,得到沙坝坝身处是流速、波高变化最大的位置,受动力作用影响最大.吹填沙坝因波浪增高掀沙、潮流挟沙输运,可为其后方的海滩提供沙源补充.近岸区域潮流动力较弱,波浪变化较小,采用人工补砂和水下沙坝式潜堤双重整治的海滩养护工程对海滩上人工养护泥沙的保存非常有利.
Beach nourishment project, involving both beach nourishment and submerged sandbars construction, will be carried out on Tiger-Rock Beach. Based on finite volume method, the software Mike 21 is employed to establish a 2D flow and wave model of study area. Simulation results of the models are minutely verified by a comparison with the measured hydrodynamic data in 2011. Furthermore, the model efficiency is evaluated. Results show that the computation processes of tidal level, current coincide fairly well with field data, and with a high accuracy. This paperfocuses on the influence of beach nourishment project to the surrounding current and wave. The levee of the submerged sandbars, where is the largest variation of velocity and significant wave height occur, is an additional sand source for artificial filled sands backyard with the long-term dynamic loads. For the weak current and little wave change, the beach nourishment combining artificial filled sands and submerged sandbars is advantageous to save filled sands on the beach.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第5期689-694,共6页
Journal of Tongji University:Natural Science
基金
中央分成海域使用金项目(2011919
2013286)
河北省科学技术研究与发展计划(11276709D)
关键词
海滩养护
老虎石
水动力响应
软件Mike
21
beach nourishment
Tiger-Rock Beach
hydrodynamic response
the software Mike 21
