通州湾港区高滩围堤设计关键技术

Key technology of high beach dike design

通州湾港区位于南通市腰沙、冷家沙区域,地处辐射沙洲南缘,低潮时滩面出露,潮差大.通州湾港区规划方案体量巨大,需通过大面积围填高滩形成港区陆域,围堤建设是陆域形成的前提条件.通过研究波浪、潮流、地质等基础资料,结合模型试验和工程实践,从堤顶高程、堤心材料、抗滑防渗防冲刷分析、施工要点等多方面进行研究、总结大潮差粉砂底质环境下高滩围堤设计的关键技术,为后续工程提供参考、积累经验.

Located in Yaosha and Lengjiasha area of Nantong city,Tongzhou Bay Port stands on the southern margin of the radial sandbar with large beach surface exposure at low tide and large tidal range.The scale of Tongzhou Bay Port Area plan is large,which requires massive land reclamation to form the port area,with the prerequisite of sea dike building.By studying the basic data of wave,tidal current,geology and etc.,and combining with the model test and engineering practice,we study the key technology of dike design under the environment of high tides and silty-sand foundation,so as to provide reference and experience for subsequent projects from dike elevation,material,analysis of skid resistance,seepage and scour prevention,construction essentials,etc.