基于Mike21模型的河道水质提升工程试验研究  

River Water Quality Based on Mike21 Model Lifting Engineering Test Research

作　　者：奚斌[1] 陈倩倩 陈伟[2] 奚望 邹燕 黄海涛 陈志刚 沈世煊 陈叶欣 孔庆昊 XI Bin;CHEN Qian-qian;CHEN Wei;XI Wang;ZOU Yan;HUANG Hai-tao;CHEN Zhi-gang;SHEN Shi-xuan;CHEN Ye-xin;KONG Qing-hao(College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,Jiangsu Province,China;Water Project Management Division of the Jiangdu District of Jiangsu province,Yangzhou 225200,Jiangsu Province,China;River and Lake Management Station of the Jinhu District,Huaian 211600,Jiangsu Province,China;Urban River Management Division of Yangzhou City,Yangzhou 225000,Jiangsu Province,China)

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009 [2]江苏省江都水利工程管理处,江苏扬州225200 [3]金湖县河湖管理所,江苏淮安211600 [4]扬州市城市河道管理处,江苏扬州225000

出　　处：《中国农村水利水电》2023年第5期5-11,共7页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51541912);“十二五”国家科技支撑计划项目(2102BOD08B03-2)。

摘　　要：行船从航道驶入饮水源河道时,会将污水牵引进入饮水源河道。为了改善饮水源河道水质,减少某饮水源河道受到污染,对饮水源河道汊流边界进行优化。利用Mike21FM水动力模块建立了现状河道和汊流边界优化后的饮水源河道二维水动力数学模型,并通过物理模型试验对数学模型参数进行率定验证,模拟了现状和优化方案下的饮水源河道流场并计算了不同船行速度牵引进入饮水源河道的污水量。结果表明:优化方案能大幅减少行船驶入饮水源河道时牵引进入饮水源河道的污水量,且船行速度在6节时,行船驶过饮水源河道牵引进入饮水源河道的污水量最少。建议行船在驶入饮水源河道之前减速慢行,可以有效减少船行牵引进入饮用水源河道的污水量。When the boat enters the drinking water source river from the waterway,it will pull the sewage into the drinking water source river.In order to improve the water quality of the drinking water source river and reduce the pollution of a certain drinking water source river,this paper optimizes the boundary of the drinking water source river branch.By using the Mike21FM hydrodynamic module,the two-dimensional hydrodynamic mathematical model of the drinking water source channel after the optimization of the current channel and the boundary of the branch stream is established.The mathematical model parameters are calibrated and verified through the physical model test,and the drink⁃ing water source under the current situation and the optimized scheme are simulated.The flow field of the river channel and the amount of sewage pulled into the drinking water source river channel by different boat speeds are calculated.The results show that optimizing the boundary of the drinking water source river branch can effectively improve the estuary of the drinking water source river branch flow field,the opti⁃mized scheme can greatly reduce the amount of sewage towed into the drinking water source river when the ship sails into the upper reaches of the drinking water source river at the same boat speed,and when the speed of the boat is 6 knots,the amount of sewage drawn into the opti⁃mized drinking water source river by the boat passing through the drinking water source river is the least.It is recommended that combined with the total benefit of project investment selection,optimizing the boundary of the drinking water source river branch to reduce the amount of sewage towed into the drinking water source river;boats slow down before entering the upper reaches of the drinking water source river,which can effectively reduce the amount of sewage pulled by the boat into the drinking water source river.

关 键 词：饮水源河道 水污染 Mike-21 二维水动力学 

分 类 号：TV85[水利工程—水利水电工程]