海州湾沙滩修复整治效果研究

发布时间：2018-04-05 05:34

本文选题：西墅　切入点：沙滩养护　出处：《南京师范大学》2015年硕士论文

【摘要】：沙滩作为经久不衰的旅游休闲资源受到民众的追捧。沿海经济的大规模开发导致海岸带水动力变化,海岸带地貌也随之改变。江苏省海州湾拥有省内稀缺的基岩砂质岸段,发育多个小规模海滨浴场,但受到海岸工程建设的影响,多个沙滩发生退化。海州湾西墅湾地区原为海滨浴场,东西连岛西大堤竣工后改变湾内水动力条件,导致浴场淤积深厚、泥化报废。近年来西墅周边新城区建设和海州湾海洋公园成立为西墅沙滩修复提供了机会。西墅沙滩修复整治工程以沙滩修复为重点,辅以景观设计和基础设施建设,将西墅沙滩打造为新城区公共休闲海滩、高档居住区外环境以及市政道路附属绿道公园。为了解修复沙滩的演变过程,自2014年8月至2015年3月共开展了三次沙滩地形测量和沉积物采样。不同时期的地形资料对比分析表明,西墅沙滩经过人工填沙修复后,沙滩地形处于变化过程中,8月到11月人工填沙区中部向海淤进,而东西岬角略有侵蚀；11月至次年3月间,受冬季较强水动力作用,填沙区整体发生向岸侵退,与竣工后地形基本相吻合,沙滩地形整体较稳定,且在自我调整中不断适应当地水动力,人工填沙区高程3-6m的滩面基本稳定。人工填沙区以砂质沉积物为主,填沙区和自然岸滩交界处沉积物为粉砂质砂,且范围随时间不断扩大,表明人工填沙养护以后,部分砂质受潮汐波浪作用流失到自然滩面,使得自然滩面区砂质含量升高,但砂质岸滩总体依然较稳定。地形对比和沉积物粒度分析表明,西墅沙滩修复工程总体效果良好,沙滩形态和砂质品质较稳定,景观多样性增加,公共基础设施更完善,但工程竣工后的管理仍要加强,定期进行滩面垃圾清理工作,维护修复总体效果。
[Abstract]:Beach as a lasting tourist leisure resources by the public.The large-scale development of coastal economy leads to the hydrodynamic change of coastal zone and the change of coastal geomorphology.The Haizhou Bay of Jiangsu Province has the scarce bedrock sandy shore section in the province, and has developed many small scale beach baths, but under the influence of the coastal engineering construction, many beaches have been degraded.The area of Xishu Bay in Haizhou Bay used to be a beach beach. After the completion of the west embankment of the east and west islands, the hydrodynamic conditions in the bay were changed, which resulted in the deep deposition of the bathhouse and the scrapping of mud.In recent years, the construction of new urban area around the villa and the establishment of Haizhou Bay Ocean Park provide opportunities for the restoration of Xishu beach.The Xishu beach restoration and renovation project focuses on the beach restoration, with landscape design and infrastructure construction. The Xishu beach is made into a public leisure beach in the new urban area, the outer environment of the upscale residential area and the green road park attached to the municipal road.To understand the evolution of beach restoration, three beach topographic surveys and sediment samples were conducted from August 2014 to March 2015.The comparative analysis of topographic data in different periods shows that the beach topography is in the process of change after artificial sand filling and restoration, the middle part of the artificial sand filling area silts into the sea from August to November, and the east and west headland is slightly eroded; from November to March of the following year,Due to the strong hydrodynamic effect in winter, the whole sand filling area is invaded and retreated to the shore, which basically coincides with the topography after completion, and the beach topography is stable, and adapts to the local hydrodynamic force in self-adjustment.The beach surface with a height of 3-6 m in artificial sand filling area is basically stable.The artificial sand filling area is dominated by sandy sediment, and the sediment at the junction between the sand filling area and the natural shoal is silty sand, and the range is expanding with time, which indicates that after artificial sand filling and conservation, part of sand is lost to the natural beach surface by tidal wave action.The sand content in the natural beach area is increased, but the sandy shoal is still stable.Terrain comparison and sediment granularity analysis show that the overall effect of Xishu beach restoration project is good, the sand beach shape and sand quality is stable, the diversity of landscape is increased, the public infrastructure is more perfect, but the management after the completion of the project should be strengthened.Regular beach surface garbage cleaning work, maintenance and repair of the overall effect.
【学位授予单位】：南京师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P748

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