夏季典型风场下引江济太工程对贡湖湾水动力特征的影响  

Influence of Project of Water Diversion from Yangtze River to Taihu Lake on Hydrodynamic Characteristics of Gonghu Bay Under Typical Wind Field in Summer

作　　者：王文康 徐世凯[1,2] 赵金箫 丁文浩 王勇 WANG Wen-kang;XU Shi-kai;ZHAO Jin-xiao;DING Wen-hao;WANG Yong(Nanjing Hydraulic Research Institute,Nanjing 210029,China;Key Laboratory of Taihu Basin Water Management,Ministry of Water Resources,Wuxi 214131,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]水利部太湖流域水治理重点实验室,江苏无锡214131

出　　处：《水电能源科学》2023年第3期23-26,90,共5页Water Resources and Power

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(Y122013,Y121007,Y118011,Y119013,Y119014,Y120014);江苏省水利科技项目(2018001)。

摘　　要：为探究引江济太工程对贡湖湾水动力特征的影响规律,以贡湖湾为例,基于太湖风生流物理模型分析了夏季典型风场下不同风速和望虞河引水流量作用时对贡湖湾的水动力特征影响范围和湾内垂向流速、平面环流分布的影响规律。结果表明,望虞河引水流量的变化对贡湖湾水动力特征的影响范围主要在近区和中区,对大太湖影响较小;引江济太工程的实施能显著改变近区和中区内望虞河出口轴线上的垂向流速分布特征,但对交界断面处垂向流速分布特征无影响;贡湖湾内平面环流特征受风速和引水流量的共同影响,风速和引水流量的变化对平面环流的面积、位置和形状影响显著。研究结果可为评价引江济太工程对贡湖湾水环境的影响提供水动力方面的理论支撑。Focusing on the influence of the project of water diversion from Yangtze River to Taihu Lake on the hydrodynamic characteristics of Gonghu Bay, the physical model of the wind-driven currents in Taihu Lake was used to analyze the influence on the hydrodynamic characteristics and the vertical flow velocity and planar circulation distribution in Gonghu Bay under the different wind speeds and different diversion flow of Wangyu River in the typical wind field in summer. The results indicate that the variation of Wangyu River diversion flow affects the hydrodynamic characteristics of Gonghu Bay mainly in the near and middle regions, but has little impact on Taihu Lake;The implementation of the water diversion project from Yangtze River to Taihu Lake significantly changes the vertical velocity distribution characteristics on the outlet axis of Wangyu River in the near and middle regions, but has no effect on the vertical velocity distribution characteristics at the junction section;The characteristics of the planar circulation in Gonghu Bay are affected by both wind speed and diversion flow, the changes of wind speed and diversion flow have a significant impact on the area, location and shape of the plane circulation. The research results can provide hydrodynamic theoretical support for evaluating the impact of the water diversion project from Yangtze River to Taihu Lake on the water environment of Gonghu Bay.

关 键 词：引江济太工程 贡湖湾 风生流 水动力 物理模型 

分 类 号：TV131.61[水利工程—水力学及河流动力学] P343.3[天文地球—水文科学]