极端干旱条件下长江口某电厂温排水影响研究  

Study on the impact of thermal drainage from a power plant in the Yangtze River estuary under extreme drought

作　　者：应碧茜 YING Bixi(Shanghai Investigation Design&Research Insitutue Co.,Ltd.,Shanghai 200335,China)

机构地区：[1]上海勘测设计研究院有限公司,上海200335

出　　处：《水利发展研究》2025年第2期103-110,共8页Water Resources Development Research

基　　金：上海勘测设计研究院有限公司科研项目(2022QT(83)-008)。

摘　　要：长江口作为海陆连接的重要区域,生态环境具有突出的特殊性和多样性,电厂温排水对其影响不容忽视。基于Mike21 FM建立了长江口某电厂温排水数值分析模型,对不同水文气象条件下电厂新增机组后温排水的影响范围进行了模拟,并以长江流域自1961年有完整气象水文观测记录以来最极端的干旱年——2022年为例,分析极端气候条件下温排水影响范围的变化。结果表明:河口地区电厂温排水受上游径流和长江口外潮汐的双重影响,通常情况下高温升水体最大扩散面积不超过1.53 km^(2),但在极端气候条件下,温排水影响范围最大可达7.96 km^(2)。研究成果对河口电厂管理以及极端气候影响下温排水影响分析提供了参考意义。As an important area connecting land and sea,the Yangtze River estuary has distinct uniqueness and diversity in its ecological environment,and the impact of thermal discharge from power plants cannot be ignored.Based on Mike21 FM,this article constructs a numerical analysis model for thermal discharge of a power plant at the mouth of the Yangtze River,which simulates the impact range of thermal discharge after the addition of new units in the power plant under different hydrological and meteorological conditions.Taking year 2022,the most extreme drought year in the Yangtze River Basin since 1961,as a case study,the article analyzes the changes in the impact range of thermal discharge under extreme climate conditions.The results show that the thermal discharge of power plants in the estuary area is affected by both upstream runoff and tides outside the Yangtze River estuary.Under normal circumstances,the maximum diffusion area of high-temperature rising water bodies does not exceed 1.53 km^(2),but under extreme climate conditions,the maximum impact range of thermal discharge can reach 7.96 km^(2).The research results provide reference significance for power plants management in the Yangtze River estuary and the analysis of the impact of temperature discharge under extreme climate conditions.

关 键 词：长江口 温排水 Mike21 FM 极端气候 

分 类 号：X171[环境科学与工程—环境科学]