摘要
海岸侵蚀作为一种全球性的海岸地质灾害,长期以来备受全世界沿海国家和地区的持续关注,越来越多的学者对海岸侵蚀灾害的发展和变化进行研究,并致力于提出相关的防治对策以减少人民生命财产的损失.根据北海市海岸带地区有关地质资料及海洋水文资料,采用实地调查、剖面监测、海图及地形图对比、取样分析等技术手段,研究北海市围填海区某码头海岸侵蚀淤积特征及机理.同时从围填方式、物质结构组成、水动力改变情况等3个侵蚀影响因素的角度对侵蚀机理进行初步分析.研究结果表明:该码头岸段出现不同程度的侵蚀破坏,具体侵蚀现象表现为海滩颗粒粗化、滩面下蚀、岸线后退,并伴有明显陡坎发育;最后提出围填海海堤相关防护对策.
Coastal erosion as a global geological disaster,has long been a constant concern of coastal countries and regions around the world.More and more scholars are committed to proposing relevant prevention and control measures to reduce the loss of people's lives and property.The characteristics and mechanism of coastal erosion and sedimentation of a wharf in the Beihai Reclamation Area were studied by means of field investigation,profile monitoring,chart and topographic map comparison,sampling analysis and other technical means.It was found that there were different degrees of erosion and damage on the shore of the wharf.The specific erosion phenomenon was characterized by coarsening of beach particles,erosion of beach surface,retreat of shoreline,and obvious steep development.At the same time,the erosion mechanism was analyzed from the three factors of erosion,such as surrounding filling method,material structure and hydrodynamic change.The countermeasures for the sea-filled seawall were proposed.
作者
陈胜前
王家全
江日光
史思佳
CHEN Shengqian;WANG Jiaquan;JIANG Riguang;SHI Sijia(School of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,China;Guangxi Zhuang Autonomous Region Marine Geological Survey Institute,Beihai 536000,China)
出处
《广西科技大学学报》
2020年第1期59-64,共6页
Journal of Guangxi University of Science and Technology
基金
国家自然科学基金项目(41962017)
广西自然科学基金项目(2017GXNSFAA198170)资助.
关键词
海岸侵蚀
围填海
影响因素
海堤
防护方法
coastal erosion
sea reclamation
influencing factors
seawall
protection method
