加纳特马港防波堤稳定性局部物理模型试验研究  

Three-dimensional experimental study on breakwater stability in Tema Port,Ghana

作　　者：严士常[1,3,4] 王广生 陈国平[1,3,4] 杨越 郑金海[1,3,4] YAN Shichang;WANG Guangsheng;CHEN Guoping;YANG Yue;ZHENG Jinhai(Key Laboratory of Coastal Disaster and Protection of Ministry of Education,Hohai University,Nanjing 210024,China;China Harbour West Africa Regional Company,Abidjan 06BP6687,C te d′Ivoire;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210024,China;Institute of Water Science and Technology,Hohai University,Nanjing 211106,China)

机构地区：[1]河海大学海岸灾害及防护教育部重点实验室,南京210024 [2]中国港湾西部非洲区域公司,科特迪瓦阿比让06BP6687 [3]河海大学港口海岸与近海工程学院,南京210024 [4]河海大学水科学研究院,南京211106

出　　处：《水道港口》2023年第5期719-723,共5页Journal of Waterway and Harbor

基　　金：国家重点研发计划政府间国际科技创新合作项目(2022YFE0104500)。

摘　　要：非洲西海岸几内亚湾涌浪周期长、风暴期间大浪持续时间长,加纳特马港新集装箱码头防波堤还受到斜向浪作用,为研究防波堤转弯段的护面稳定性,建立了港池局部整体物理模型。试验结果表明,防波堤各部位满足稳定要求,但转弯段和堤根段局部堤顶护面块石的失稳数较大。分析了波浪入射角对防波堤各部位稳定的影响,堤顶和堤后块石主要受越浪的作用,波浪和堤轴线夹角较大时,波浪入射角些许变化对堤顶及堤后块石稳定影响不明显;波浪和堤轴线夹角较小时,波浪入射角增大导致越浪量变大使堤顶及背浪面块石失稳数增大。The swell along the Gulf of Guinea on the west coast of Africa was characterized by a long wave period,and the large waves persisted for an extended duration during the storm.Additionally,the breakwater of the new container terminal in Tema Port,Ghana was affected by oblique waves.A three-dimensional physical model was established in a wave basin to investigate the armor stability in the turning section of the breakwater.The experimental results revealed that a significant number of unstable top armor blocks occurred in the turning and ending sections of the breakwater,despite meeting the stability requirements in all sections.The influence of the incident angle of the waves on the breakwater's stability in all sections was analyzed,indicating that the stability of the top and rear blocks of the breakwater was governed by wave overtopping.When there was a large angle between the wave and breakwater axis,changes in the angle had a negligible impact on the stability of the top and rear blocks of the breakwater.Conversely,when there was a small angle between the wave and breakwater axis,an increase in the incident angle of the waves resulted in significant wave overtopping and a higher number of unstable top and rear armor blocks.

关 键 词：特马港 非洲西海岸 港池实验 防波堤 稳定性 护面块石 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]