跨海大桥工程对附近水域影响的数值研究  

Numerical study on influence of sea bridge project on nearby waters

作　　者：吴松华 WU Song-hua(CCCC Water Resources and Hydropower Construction Co.,Ltd.,Ningbo 315200,China)

机构地区：[1]中交水利水电建设有限公司,浙江宁波315200

出　　处：《水运工程》2021年第9期9-15,共7页Port & Waterway Engineering

摘　　要：利用平面二维浅水潮波方程,在对实测资料良好验证的基础上,得到浦坝港海区较符合实际的流场,分析浦坝港大桥工程对周边海区水流、泥沙的影响及危险品坠海引起的水质变化。结果表明:流速增大区位于主桥墩之间和附近的水域,减小区主要位于大桥南段和北段引桥桥墩附近的水域以及主桥墩所处的局部水域;淤积区域主要位于浦坝港大桥的南段以及北段引桥附近的水域,冲刷区域位于主桥墩所在的水域附近;在桥梁所在海域若发生硫酸泄漏事故,对海域水环境的影响范围很大,应坚决避免此类事故的发生以保证海区水质。We use two-dimensional shallow-water tidal equation,obtain the real tidal flow field of Puba Port on the basis of model verification against the field measured data,and analyze the effect of the Puba Port bridge project on the flow and silt in the nearby sea area and the change of water quality resulting from the dangerous goods into the sea.The results show that the increased zone of flow velocity is located between two main piers of the bridge and near the water,the reduced zone of flow velocity is located mainly in the nearby waters of the southern and northern approach bridge piers and the local waters of the main piers.The deposition area mainly is located in the south part of the bridge of Puba Port and near the north part of the approach bridge,scour area is located in the waters around the main piers.If sulfuric acid leakage accident is produced in waters around the bridge,the affecting area of the water environment is large,such accident must be avoided to ensure the water quality.

关 键 词：潮流 数学模型 数值模拟 水质 泥沙冲淤 浦坝港 

分 类 号：TV131.2[水利工程—水力学及河流动力学]