引江补汉工程运行后汉江黄家港—王甫洲段水质响应  

Water Quality Response of the Huangjiagang-Wangfuzhou section of the Han River after the Operation of the River Diversion and Han Replenishment Project

作　　者：王雨欣 邵东国[1] 何杰[1] WANG Yu-xin;SHAO Dong-guo;HE Jie(State Key Laboratory of Water Resources Engineering and Management,Wuhan University,Wuhan 430072,Hubei Province,China)

机构地区：[1]武汉大学水资源工程与调度全国重点实验室,湖北武汉430072

出　　处：《中国农村水利水电》2024年第11期71-80,共10页China Rural Water and Hydropower

基　　金：国家自然科学基金区域创新发展联合基金重点支持项目(U21A20156)。

摘　　要：随着汉江流域经济社会的发展,水环境水生态压力加大,引江补汉工程的实施可能导致汉江水质水量发生进一步变化。因此开展引江补汉工程调水前后汉江中下游水体水质水量模拟分析与预测,对控制该流域水体污染具有重要意义。采用分段马斯京根法及一、二维水质模型,预测了引江补汉工程引水后黄家港—王甫洲段水量水质响应。结果表明:①引江补汉工程采用全年无间断引水方式引水后,黄家港—王甫洲河段的流量有所增加,夏汛流量增加高于秋汛,王甫洲断面流量增加略高于沈湾断面;②调水前后沈湾断面月均总磷浓度都达到Ⅱ类水质标准,月均总氮浓度处于Ⅳ类~Ⅴ类标准。各项水质指标在情景二下的增长率是情景一的2~3倍,相较于调水前,情景一总磷浓度最大增长为4.68%,情景二总磷浓度最大增长为13.45%。其次为总氮,情景一总氮浓度最大增长为1.15%,情景二总磷浓度最大增长为3.44%;③调水前后王甫洲断面汛期月均总磷浓度均达到Ⅱ类水质标准,引水后枯水年总磷浓度有所增加,丰水年浓度略有降低。整体上枯水年较丰水年的水质变幅更大,各项水质指标在两种情景下的变幅相差不大。With the economic and social development of the Han River basin,the pressure on the water environment and water ecology has increased,and the implementation of the water diversion project from the Yangtze river to the Han River may lead to further changes in the quality and quantity of water in the Han River.Therefore,it is of great significance to carry out simulation analysis and prediction of water quality and water quantity in the middle and lower reaches of the Han River before and after the water diversion project,in order to control the pollution of water bodies in the basin.In this paper,we predicted the water quantity and quality response of Huangjiagang-Wangfuzhou section after the diversion of water by using the segmented Muskingum method and one-dimensional and two-dimensional water quality models.The results show that:①After the river diversion project adopts the year-round uninterrupted water diversion method to divert water,the flow of the Huangjiagang-Wangfuzhou river section increases,and the increase of flow in the summer flood is higher than that in the fall flood,and the increase of flow in the Wangfuzhou section is slightly higher than that in the Shenwan section;②Before and after the water transfer,the average monthly total phosphorus concentration in Shenwan section reached the water quality standard of Class II,and the average monthly total nitrogen concentration was within the standard of Class IV-V.The growth rate of various water quality indicators under Scenario 2 was 2-3 times that of Scenario 1.Compared with before the water transfer,the total phosphorus concentration in Scenario 1 increased by a maximum of 4.68%,and the total phosphorus concentration in Scenario 2 increased by a maximum of 13.45%.This was followed by total nitrogen,with a maximum increase of 1.15%for scenario 1 and 3.44%for scenario 2;③Monthly total phosphorus concentration in the flood season at Wangfuzhou section before and after the water transfer reached the water quality standard of Class II,and the total

关 键 词：引江补汉工程 分段马斯京根法 水质预测 水质模型 二维稳态水质混合模式 

分 类 号：TV68[水利工程—水利水电工程] X824[环境科学与工程—环境工程]