摘要
梯级水电站的建立,会改变了原有河道的水温状态。充分了解大渡河干流猴子岩-瀑布沟河段已建梯级电站产生的水温累积影响,为后续河流梯级开发、优化调度、河流生态修复等提供基础支持,本研究基于猴子岩-瀑布沟开发河段相关水温监测资料,通过分析相关数据,研究梯级水库库区及下泄水温累积影响的相关规律。结果表明,大渡河中上游的猴子岩、大岗山和瀑布沟水库呈现季节性分层,但热分层最强的季节及持续的时间均存在差异;上游梯级运行在大岗山及瀑布沟坝址处存在水温累积影响。本研究还开发了水温恢复的临界河长的估算方法,明确了河段水温受梯级开发影响的再平衡机制。
The establishment of cascade hydropower stations has changed the water temperature of the original river.The purpose is to fully understand the cumulative impact of water temperature caused by the built cascade power stations in the Monkeyyan-Pubugou section of the Dadu River mainstream,and provide basic support for subsequent river cascade development,optimal dispatch,and river ecological restoration.This study is based on the Monkeyyan-Pubugou development river.By analyzing the water temperature monitoring data of the section,the relevant laws of the cumulative impact of water temperature in the cascade reservoir area and the discharged water were studied.Research results showed that the Monkey Rock,Dagangshan and Pubugou reservoirs in the middle and upper reaches of the Dadu River were all seasonally stratified reservoirs,but there were differences in the seasons with the strongest thermal stratification and the duration;The upstream cascade runs in Dagangshan And the cumulative water temperature at the Pupugou dam site has a more significant impact.This study also developed a method to estimate the critical river length for water temperature recovery,and clarified the rebalancing mechanism of river section water temperature affected by cascade development.
作者
黄翔
陈雪峰
徐李濠
HUANG Xiang;CHEN Xuefeng;XU Lihao(CHN Energy Dadu River Basin Hydropower Development Co.,Ltd,Chengdu 610000,China;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China)
出处
《灌溉排水学报》
CAS
CSCD
2024年第S01期99-107,共9页
Journal of Irrigation and Drainage
基金
四川省科技计划重点研发项目(2022YFG0120)
关键词
梯级开发
水温结构
水温累积影响
临界河长
cascade development
water temperature structure
cumulative impact of water temperature
critical river length
