摘要
为客观评估太湖水补水对蠡湖透明度改善效果的影响,由实测资料分析得出了适用于蠡湖的水体透明度(SD)与悬浮物(SS)浓度、叶绿素a(Chla)浓度的相关关系,并利用MIKE 21构建了蠡湖水动力-水质耦合模型,经验证模型精度良好,可用于模拟计算;以南部长广溪节制闸及西部五里湖节制闸进水两种典型补水方案为例,分析了蠡湖水体透明度的改善效果。计算结果表明:两种方案均可将蠡湖平均透明度提升至0.8 m以上;南部补水方案使全湖平均透明度提高了0.5 m,好于西部补水方案;适当加大东部出口的出流量可以提高水体透明度的改善效果;补水会导致局部区域悬浮物浓度增加,在补水总流量固定的条件下,适当调控出口流量分配可以有效改善蠡湖水体透明度。
In order to objectively evaluate the influence of water replenishment of Taihu Lake on the improvement of the transparency of Lihu Lake,the correlation between water transparency(SD)and the concentration of suspended solids(SS)and chlorophyll-a(Chla)suitable for Lihu Lake was obtained by analyzing the measured data.The coupling model of hydrodynamic and water quality of Lihu Lake was constructed by using MIKE 21,which can be used for simulation and computation.The SD improvement effect of Lihu Lake under two typical water replenishment schemes of Changguangxi water intake in the south and Wuli Lake control gate water intake in the west was analyzed.The results show that the average transparency of Lihu Lake can be increased to more than 0.8 m by both schemes.The average transparency of the whole lake increased by 0.5 m in the southern water replenishment scheme,which was better than that in the western water replenishment scheme.Appropriately increasing the outflow of the eastern outlet can improve the effect of water transparency.Water replenishment will lead to the increase of suspended solids concentration in local areas.Under the condition that the total water replenishment flow is fixed,proper regulation of outlet flow distribution can effectively improve the water transparency of Lihu Lake.
作者
吴佩翰
朱海
徐项哲
鞠茂森
闫世康
杨晨霞
周志博
唐洪武
王玲玲
WU Peihan;ZHU Hai;XU Xiangzhe;JYU Maosen;YAN Shikang;YANG Chenxia;ZHOU Zhibo;TANG Hongwu;WANG Lingling(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Wuxi Delinghai Environmental Protection Technology Co.,Ltd.,Wuxi 214000,China;Research and Training Center of River Chief System,Hohai University,Nanjing 210098,China;Zhejiang Water Conservancy and Hydropower Technical Consulting Center,Hangzhou 310020,China;Jiangsu Water Conservancy Survey and Design Research Institute Co.,Ltd.,Yangzhou 225217,China;Tianjin Research Institute of Water Transport Engineering,Ministry of Transport,Tianjin 300456,China)
出处
《水资源保护》
北大核心
2025年第1期186-197,共12页
Water Resources Protection
基金
国家重点研发计划项目(2022YFC3202605)
国家自然科学基金项目(52479062)
国家自然科学基金青年科学基金项目(52309086)
江苏省水利科技项目(2023013)。
关键词
水体透明度
补水
MIKE
21
水动力-水质耦合模型
蠡湖
water transparency
water replenishment
MIKE 21
hydrodynamic and water quality coupling model
Lihu Lake
作者简介
吴佩翰(2000-),男,硕士研究生,主要从事水环境数值模拟研究。E-mail:wph@hhu.edu.cn;通信作者:王玲玲(1966-),女,教授,博士,主要从事水环境数值模拟研究。E-mail:706584934@qq.com。
