摘要
“引江济太”作为流域骨干调水工程,对贡湖湾湖流的影响一直受到较多关注。2022年夏季(8月25日9月5日)和2023年冬季(1月18日2月28日),在贡湖湾布设9个站点,开展“引江济太”和风场共同影响下的贡湖湾湖流运动特征研究。通过监测氯离子浓度分布来分析“引江济太”作用下江水入贡湖湾后输移规律,并建立数值模型,基于示踪粒子验证模型的可靠性。夏季和冬季贡湖湾垂向平均流速均呈现出河口区和交界断面区高、中间过渡区低的特点,河口区湖流主要受“引江济太”影响,中间过渡区、交界断面区湖流主要受风场影响。贡湖垂向平均流场可分为顺时针、逆时针、中间进两岸出、中间出两岸进4种类型。“引江济太”一定程度上会加快贡湖部分水域的流速,贡湖中轴线处流速的改善作用最为明显。
As a watershed important water transfer project,the influence of Water Diversion from Yangtze River to Lake Taihu Project(WDYT)on the lake current of Gonghu Bay has always received a substantial amount of attention.During the summer of 2022(August 25-September 5)and the winter of 2023(January 18-February 28),nine sites were set up in Gonghu Bay to conduct a study on the movement characteristics of the lake current under the combined influence of WDYT and the wind field.It was proposed that chloride ions could serve as natural tracers to observe and simulate the movement characteristics of the Yangtze River water entering Gonghu Bay,and a numerical model was established.The reliability of the model was verified based on tracer particles.Both in summer and winter,the vertical average current velocity in Gonghu Bay showed high values in the estuarine area and boundary section,but low values in the intermediate transition zone.Current velocity in the estuary area was primarily influenced by WDYT,while current velocity in the intermediate transition area and boundary section was mainly affected by the wind field.The vertical mean current field of Gonghu Bay could be divided into four types:clockwise,anticlockwise,two sides in,middle out and two sides out,middle in.To some extent,WDYT will speed up the current rate of some areas of Gonghu Bay,and the diversion of water has an obvious effect on the improvement of current velocity at the central axis of Gonghu Bay.
作者
马明
殷燚杰
石亚东
沈骁腾
吴东浩
陈鹏
任俊宏
Ma Ming;Yin Yijie;Shi Yadong;Shen Xiaoteng;Wu Donghao;Chen Peng;Ren Junhong(Taihu Basin Monitoring Center of Hydrology and Water Resources,Wuxi 214024,P.R.China;Key Laboratory of Taihu Basin Water Resources Management and Protection of the Ministry of Water Resources,Wuxi 214131,P.R.China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210024,P.R.China;College of Environment,Hohai University,Nanjing 210098,P.R.China;College of Environment and Civil Engineering,Jiangnan University,Wuxi 214000,P.R.China)
出处
《湖泊科学》
EI
CAS
CSCD
北大核心
2024年第6期1922-1932,共11页
Journal of Lake Sciences
基金
水利部重大科技项目(SKS-2022065)资助。
关键词
“引江济太”
贡湖湾
流场
示踪离子
原位观测
数值模拟
Water diversion from Yangtze River to Lake Taihu
Gonghu Bay
current field
tracer ion
field observation
numerical simulation
