港口扩建影响下近岸沙滩稳定防护三维水动力模型试验研究  

Hydrodynamic Experimental Study on Stability Protection of Nearshore Beach Under Influence of Port Expansion

作　　者：高峰 唐友刚[1,3] 彭程[2,3] 赵旭 张慈珩[2,3] 耿宝磊 GAO Feng;TANG You-gang;PENG Cheng;ZHAO Xu;ZHANG Ci-heng;GENG Bao-lei(School of Civil Engineering,Tianjin University,Tianjin 300072,China;Tianjin Research Institute for Water Transport Engineering,M.O.T.,Tianjin 300456,China;National Engineering Laboratory for Port Hydraulic Construction Technology,Key Laboratory of Engineering Sediment of the Ministry of Transport,Tianjin 300456,China)

机构地区：[1]天津大学建筑工程学院,天津300072 [2]交通运输部天津水运工程科学研究院,天津300456 [3]港口水工建筑技术国家工程实验室工程泥沙交通行业重点实验室,天津300456

出　　处：《海岸工程》2018年第3期14-24,共11页Coastal Engineering

基　　金：国家自然科学基金项目--斜坡堤越浪标准和比尺效应研究(51409135);天津市应用基础与前沿技术研究计划项目--港口护岸越浪模拟与越浪标准初探(15JCQNJC07300)

摘　　要：面向日本海的韩国东海港(Donghae)位于朝鲜半岛东部的江原道海岸,该港在原有基础上扩建新港区,为了降低该工程对邻近沙滩稳定性影响,拟建用于进行岸滩防护的突堤与离岸堤群。本文主要研究了工程实施前后沙滩剖面变化以及工程对岸线的影响。试验结果表明,当波浪持续作用达到沙滩剖面基本稳定时,不同角度布置的离岸堤群和突堤所共同构成的防护措施可以对沙滩岸段进行有效防护,根据波浪作用下的泥沙动床试验结果,入射波在传至离岸堤后能量有所衰减,对于削弱波浪侵蚀力的改善效果是非常明显的,结合试验现象和测试结果可见,离岸堤在减少附近海滩的侵蚀和侵蚀海滩上起到了一定的作用。The Donghae Port facing to the Japan Sea and lying at the Gangwon-do coast in the east of Korean Peninsula has expanded the new port area on the basis of its original. To reduce the impact of the project on the stability of adjacent beaches, jetties and offshore breakwaters used for shore protection are to be constructed. In this paper the changes of beach profile before and after the implementation of the project and the influence of the project on the shoreline are studied. The results from the experiments show that when the continuous action of waves makes the beach profile basically stable, the protective measures constituted by the jetties and offshore breakwaters with different angle arrangement can protect the beach shore effectively. According to the sediment moving bed tests under the wave action, the incident wave can attenuate its energy after reaching the offshore breakwaters. Obviously, the wave erosivity can be weakened. It can be seen from the experimental phenomenon and the testing results that the offshore breakwaters can play a certain role in reducing the eroded beaches and the erosion of the nearby beaches.

关 键 词：模型试验 波浪 侵蚀 稳定性 泥沙 动床 

分 类 号：X826[环境科学与工程—环境工程]