海湾工程对杭州湾北岸深槽潮流的影响  

Impact of the gulf projects on the tidal currents of deep channel in the northern coast of Hangzhou Bay

作　　者：黄赛花[1,2] 吴彦坤[2] 孙志林[2] 

机构地区：[1]浙江水利水电学院水利与环境工程学院,浙江杭州310018 [2]浙江大学港口海岸及近海工程研究所,浙江杭州310058

出　　处：《浙江大学学报（理学版）》2015年第5期605-611,共7页Journal of Zhejiang University（Science Edition）

基　　金：浙江省科技厅优先主题重点社会发展项目(2009C13016)

摘　　要：为探讨解决杭州湾北部深槽水深问题的途径,建立了杭州湾海域二维潮流数学模型,模拟结果表明:海湾工程对北岸深槽的潮流存在一定影响,其中,南岸的浅滩围垦使北岸深槽乍浦段的潮流流速增大约6.94%,而金山及其他观测点的流速普遍减小;杭州湾大桥建成后,北岸深槽靠近大桥段流速减小了1.8%;潜顺坝工程的实施增强了附近深槽的潮流动力,深槽附近段进潮量最大增加14.55%,流速最大增幅达21.94%;距离潜顺坝工程较远的深槽流速最大减幅为3.09%.分析认为潜顺坝工程的实施在一定程度上增强了北岸深槽的潮流,改善了制约港口航运发展的深槽水深问题,可为杭州湾北岸港口建设和航运开发提供一定的理论依据.此外,还对外海潮流等因素对深槽的潮汐动力影响做了初步研究.The two-dimensional numerical tidal model was configured as the effective methods which could improve the water depth in a deep channel of the northern Hangzhou Bay.The results indicated that the tidal currents in the deep channel was affected by harbor engineering.For example,the cultivation projects of the southern shoal led to6.94%increment of tidal current of deep channel in the northern of Zhapu,but made the tidal velocity of other observational stations（e.g.Jinshan）generally decrease.The velocity near the bridge of northern deep water was reduced by 1.8%since the Hangzhou Bay Bridge had been built.The nearby dynamics of tidal currents were enhanced by the implement of submerged longitudinal dike,with 14.55% and 21.94% as the maximum increase rates of tidal prism and velocity,respectively,and 3.09% as a maximum drop rate of deep water velocity away from the dike.It was found that the implement of this project could result in larger tidal current in the northern coast,ameliorate the limitation of harbor transport problems brought by deep water,therefore provided scientific evidence for the port construction and shipping of the northern coast in the Hangzhou Bay.Additionally,the preliminary investigation on the effect of offshore tidal current on tidal dynamics in deep water was conducted in this paper.

关 键 词：杭州湾 北岸深槽 二维潮流模型 潜顺坝工程 水深维护 

分 类 号：TV139[水利工程—水力学及河流动力学]