秦皇岛河流-海岸水动力和水质耦合模拟分析  

Coupling simulation and analysis of hydrodynamics and water quality in Qinhuangdao rivers and coastal waters

作　　者：顾杰[1] 胡成飞 李正尧[3] 匡翠萍[3] 张永丰 GU Jie;HU Cheng-fei;LI Zheng-yao;KUANG Cui-ping;ZHANG Yong-feng(College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, China;Department of Hydraulic Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;Marine Environment Monitoring Center of Hebei,Qinhuangdao 066002, China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]浙江省水利河口研究所,浙江杭州310020 [3]同济大学土木工程学院水利工程系,上海200092 [4]河北省海洋环境监测中心,河北秦皇岛066002

出　　处：《海洋科学》2017年第2期1-11,共11页Marine Sciences

基　　金：海洋公益性行业科研专项(201305003-5)~~

摘　　要：基于MIKE FLOOD建立秦皇岛入海河流及其近岸海域一维、二维耦合河流-海岸水动力和水质模型,研究了秦皇岛海域和入海河流的水动力和污染物分布规律。结果表明:(1)海域潮流为半日潮,其中石河口南北支入海口流速变化过程差别较大,但水位变化过程基本一致;(2)整体上河流入海口化学需氧量(COD)与流速呈正相关关系;(3)COD在近岸海域的扩散方向与涨落潮潮流方向一致,各入海河口海域落潮流期间的COD高于涨潮流。如上结论为赤潮爆发机理和应急处置研究提供科学依据和技术支持。By coupling a one-dimensional model of river with a two-dimensional model for coastal waters in Qinhuangdao,a model of hydrodynamics and water quality was established based on the MIKE FLOOD.The characteristics of flow currents and distribution of pollutants in Qinhuangdao estuaries and coastal waters were subsequently analyzed.Numerical results show that1)the tidal current in coastal water is semidiurnal,and although there is considerable change in the current speeds of the north and south branches of the Shihe River estuary,the water level is basically the same.2)There is a positive correlation between chemical oxygen demand(COD)concentrations and current speeds in Qinhuangdao estuaries.3)The direction of COD transport in coastal waters corresponds to the direction of the tidal current,and the COD concentration is higher in the ebb period than that in the flood period.The above results provide a scientific basis and technical support for research into the red-tide outbreak mechanism and emergency treatment thereof.qqq

关 键 词：秦皇岛 一二维耦合模型 水动力 化学需氧量(COD) 

分 类 号：X55[环境科学与工程—环境工程]