摘要
为了查明水体在流经发电引水隧洞后水温的变比、相应天然河道的水温变比以及引水式电站尾水汇入天然河道后水温分布情况，我们实测了渔子溪一级电站、岷江映秀湾电站和南桠河三级电站的引水隧洞进、出口水温，与引水隧洞相对应的天然河道水温以及尾水下游受影响河段内的水温。结果表明：隧洞对水体有加热作用，但效果不明显;隧洞出口水温与天然河道水温相差较大，一般低于天然河道水温，使尾水口下游一定长度的天然河道内形成分布不均匀的明显低温温度带。
In order to ascertain temperature variation of water which flows through power tunnel and in natural river bed,and water temperature distribution where tailwater joins natural river bed,water tempcrfltllre at power tunnel portals and outlets at Yuzixi I hydropower station,Yinxiouwan hydropower station on Mingjian River anld Nanyahe Ⅲ hydropower station are measured. Water temperatures of natural river bed and river reach downstream are also gained. The measurement show that the water is heated through the tunnel,but not obvious. Water temperatures between tunnel outlet and natureal bed differ greatly,the former is lower than the latter. Therefore. zone is formed in the natural river downstream of tailrace.
出处
《四川水力发电》
1997年第1期73-78,共6页
Sichuan Hydropower
