基于MIKE11的航电枢纽建设工程水质模拟  

Water Quality Simulation of Navigation-power Junction Based on MIKE 11 Model

作　　者：刘莎[1] 刘伟[1] 佟洪金 魏峣 李逢港 LIU Sha;LIU Wei;TONG Hong-jin;WEI Yao;LI Feng-gang(College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China;Sichuan Academy of Eco-Environment Science, Chengdu 610041, China)

机构地区：[1]成都信息工程大学资源环境学院,成都610225 [2]四川省生态环境科学研究院,成都610041

出　　处：《四川环境》2020年第5期36-42,共7页Sichuan Environment

基　　金：四川省2018环境治理与生态保护重大科技专项:沱江流域典型河段面源污染阻控及精细化管理技术研发与集成示范(2018SZDZX0024);四川省科技厅2017年环境污染防治重点研发项目:川省典型流域水环境动态管理体系研究(2017SZ0174)。

摘　　要：为分析沱江干流自贡段航电枢纽建设前后对河道水质的影响,针对沱江干流污染现状,以沱江干流主要污染物COD、氨氮、TP为指标,应用MIKE 11模型建立能客观反映模拟河段水动力、水质时空演变规律的模型,分析了银蛇溪枢纽建库前后对沱江干流水质的影响。模拟结果表明:在污染负荷不增加的情况下,李家湾、黄葛浩、银蛇溪断面在建库后枯水年枯水月COD预测浓度月均值有所超标;枯水年NH3-N预测浓度较建库前增加率最高,平水年次之,丰水年最低;枢纽建设后,各断面TP浓度进一步升高。本研究以沱江自贡段航道建设工程为例,分析不同典型年下航电枢纽建设前后水质情况,研究结果可为沱江干流航电枢纽建设项目水质影响预测提供科学依据。In order to analyze the influence of the construction of the navigation-power junction on the water quality of Tuojiang river trunk stream of Zigong,in view of the current pollution situation of the Tuojiang main stream,the main pollutants COD,ammonia nitrogen and TP of the Tuojiang main stream were taken as indicators,and the MIKE 11 model was used to establish a model that can objectively reflect the hydrodynamic force and the temporal and spatial variation of water quality of the simulated river section.The influence of Yinhexi Junction reservoir on the water quality of the Tuojiang main stream before and after the construction of the reservoir was analyzed.The simulation results showed that under the condition that the pollution load does not increase,the predicted monthly average COD concentration in the dry season of Lijiawan,Huang Gehao and Yinshexi sections after the construction of the navigation-power junction exceeded the standard.The predicted increase rate of ammonia nitrogen in the dry season was the highest compared to the pre-reservoir level,followed by flat water years,and lowest in high water years.After the construction of the navigation-power junction,the TP concentration in each section further increased.This study takes the construction of navigation-power junction in the Zigong section of the Tuo river as an example to analyze the water quality situation before and after the construction of the navigation-power junction in different typical years.The results of the study can provide a scientific basis for the prediction of the water quality impact of the construction of the navigation-power junction of the Tuo River.

关 键 词：MIKE 11模型 水质 航电枢纽 沱江自贡段 

分 类 号：X522[环境科学与工程—环境工程]