摘要
为探讨梯级电站联合运行对下游库区水温的累积性影响,本文选取乌江中上游的乌江渡水电站为研究对象,通过建立EFDC三维水温模型,根据历年来乌江渡水电站水温实测资料对模型进行了率定验证、确定了模型计算参数,分析了不同流量、不同温度的下泄低温水对乌江渡坝前断面和库表水温的分布情况,结果表明:(1)入库流量越大,下泄低温水影响越大,水温的累积性作用越明显。入库流量相同时,天然水温与入流温度温差越大,水温的累积性作用越明显;(2)上游下泄低温水与天然河道温差相同时,下泄流量越大,相同位置处库表水温越低;(3)下泄流量相同时,天然水温与下泄水温温差越大,相同位置库表水温越低。
To explore the cumulative effect of cascade reservoirs operation on water temperature downstream the reservoir area,the Wujiangdu hydropower station(in the middle and upper reaches of the Wujiang river basin)is selected as the research object.By establishing the EFDC three-dimensional water temperature model and according to the historical data of water temperature over the past years,the model calculation parameters are verified and confirmed.The water temperature distribution in the front section and water surface of Wujiangdu reservoir are analyzed with different flow rates and different temperatures discharge of low-temperature water.The results show that:(1)The larger the inflow is,the greater the influence of the low temperature discharge water.The cumulative effect of water temperature is more obvious.When the inflow rate is the same,the greater temperature difference between the natural water and the inflow water,the more obvious cumulative effect of the water temperature.(2)When the temperature difference between the discharge of low and the natural river is the same,the larger the discharge flow rate,the lower the water temperature at the same position.When the discharge flow is the same,the larger difference between the natural river temperature and discharge water temperature,the lower the water temperature of the library in the same position.
作者
贾洪涛
JIA Hongtao(YellowRiver Conservancy Technical Institute,Kaifeng 475004,China)
出处
《海洋湖沼通报》
CSCD
北大核心
2022年第5期89-95,共7页
Transactions of Oceanology and Limnology
基金
国家自然科学基金(51779230)
河南省高等学校重点科研项目计划(17A570007)
2019开封市科技发展计划项目(1903006)
关键词
梯级电站
乌江渡
EFDC
水温
Cascade power station
Wujiangdu
EFDC
water temperature
作者简介
第一作者:贾洪涛(1981—),男,河南开封人,硕士,副教授,主要从事水文学及水资源方面的教学研究工作。E-mail:lingwen187185@163.com
