| 摘要: |
| 港珠澳大桥连接香港、珠海和澳门三地,横跨珠江口水域,大桥沿线大量的桥墩和海中人工岛必将对珠江口水域的水动力环境产生影响.采用平面二维潮流数学模型模拟了建桥前后珠江口水域的水动力变化和影响程度,采用非结构网格模拟桥墩和人工岛的形状,有限体积法求解水沙控制方程.模拟结果表明,大桥工程引起的水动力变化区域主要集中在东、西人工岛上下游各5 km及非通航区桥位上下游各1 km范围以内水域,对珠江口水域的水动力分布格局基本不产生影响. |
| 关键词: 港珠澳大桥 珠江口 数学模型 人工岛 |
| DOI： |
| 分类号:TV131.4 TV148+.3 |
| 基金项目: |
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| Numerical simulation of hydrodynamic impact of Hong Kong-Zhuhai-Macao Bridge on Pearl River estuary |
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HE Jie,XIN Wen-jie,JIA Yu-shao
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(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China)
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| Abstract: |
| The Hong Kong-Zhuhai-Macao Bridge(HZMB) connects Hong Kong,Zhuhai and Macao districts,and it stretches across the Pearl River estuary.A lot of piers and artificial islands in the water area will have an impact on the hydrodynamic environment in the Pearl River estuary.In this paper,a 2D tidal current numerical model is developed to simulate the hydrodynamic impact from the HZMB project,and the unstructured grids are used to simulate the shape of piers and artificial islands,the finite volume methods adopted to solve the water and sediment governing equation.The simulated results show that the hydrodynamic impact is concentrated on the 5.0 km range of two artificial islands and the 1.0 km range of the bridge site in non-navigable zone,and that the HZMB has little impact on the distribution of hydrodynamic environment in the Pearl River estuary. |
| Key words: Hong Kong-Zhuhai-Macao Bridge Pearl River estuary numerical model artificial island |
