摘要
珠江口伶仃洋是地貌条件独特、水沙条件复杂的敏感海区,也是我国乃至世界沿海航线最密集、船舶密度最大的水域之一;港珠澳大桥是横跨伶仃洋的由"桥-岛-隧"构成的超级大型复杂工程。针对港珠澳大桥工程对珠江口伶仃洋复杂的水沙动力环境的影响,采用多种研究手段对大桥工程对伶仃洋水域水沙环境、港口航道、滩槽稳定性影响等关键问题进行全面深入系统的研究论证。主要研究成果表明:1)珠江口伶仃洋具有"微变性、趋稳性、可塑性"的重要特征,其"三滩两槽"基本格局可以长期保持稳定;2)港珠澳大桥(推荐方案)对珠江口伶仃洋水沙环境不利影响相对较小,对港口航道基本无不利影响;3)从水沙条件角度来看,港珠澳大桥(推荐方案)工程的建设是可行的。
Lingdingyang Firth of the Pearl River Estuary is a sensitive sea area with unique geomorphic features and complex hydrodynamic sediment conditions, and it is also one of the coastal sea waters with densest routes and biggest ship density.The Hong Kong-Zhuhai-Macao Bridge （ HZMB）, consisting of bridge-islands-tunnel, is a super large complex project crossing the Lingdingyang Firth. Aiming at HZMB and complex hydrodynamic sediment environments of Lingdingyang Firth, various means are adopted to carry out comprehensive and deeply studies on the key problems such as the influences of HZMB on hydrodynamic sediment environment, harbor and navigational channel and stability of shoals and troughs, etc. The following main conclusions are drawn from the study.l） Lingdingyang Firth of the Pearl River Estuary presents the characters of micro-variability, tendency-to- stability and flexibility, and its geomorphic pattern chronically. 2）The recommended scheme of HZMB of ＂Three Shoals and Two Troughs＂ can keep stable has relatively less influence on hydrodynamic sediment environment, and it has bascially little unfavorable impact on harbors and navigational channels. 3）The recommended scheme of HZMB is feasible as far as its effect on hydrodynamic sediment environment is concerned.
出处
《水运工程》
北大核心
2017年第10期67-72,79,共7页
Port & Waterway Engineering
基金
国家重点研发计划项目(2016YFC0402605)
关键词
港珠澳大桥
珠江口
伶仃洋
水沙环境
港口航道
微变性
趋稳性
可塑性
Hong Kong-Zhuhai-Macao Brige
the Pearl River Estuary
Lingdingyang Firth
hydrodynamicsediment environment
harbor and navigational channel
micro-variability
tendency-to-stability
flexibility
