三峡库区175m试验性蓄水期间水温变化分析  

Analysis on water temperature variation in TGP reservoir in 175 m pilot impoundment

作　　者：王悦[1] 叶绿 高千红 

机构地区：[1]南京大学生命科学学院,江苏南京210093 [2]长江水利委员会三峡水文水资源勘测局,湖北宜昌443000

出　　处：《人民长江》2011年第15期5-8,共4页Yangtze River

摘　　要：为了分析三峡水库蓄水以后,库区水体的水温变化情况2,008年10月至2009年6月在三峡库区5个典型断面进行了水温观测。根据观测资料,较为系统地分析了三峡库区水温沿程和垂向变化情况,水体水温分层现象及其影响因素。研究表明:三峡水库蓄水后,库区水体的水温变化无论在时间上还是幅度上均存在迟滞现象,巴东断面到大坝70 km范围内的近坝段水体呈现出一定的水温分层现象。三峡水库库区水体垂向水温差异主要与库区河道水力条件、水体水流条件、流域气候条件及水库调度运行等因素密切相关。In order to analyze water temperature variation in TGP reservoir,in the period from October,2008 to June,2009,the temperature of 5 typical cross-sections in the reservoir was observed.According to the observed data,the longitudinal and vertical water temperature variation in the reservoir,the layered water temperature law and influential factors are analyzed.The research showed that after impoundment of TGP reservoir,sluggish phenomenon of water temperature variation both in time and amplitude was existed;the layered temperature phenomenon existed from Badong County cross-section to the dam site of 70 km long;the vertical water temperature difference has close relation with hydraulic condition of river channel,flow condition,climate and reservoir regulation.

关 键 词：蓄水期 水温分层 影响因素 三峡库区 

分 类 号：TV679[水利工程—水利水电工程]