摘要
水库水温分层影响下游鱼类等的繁殖和农业灌溉作物的生长。采用EFDC模型,建立三维水动力模型,模拟汤村水库水温特性,分析水库水温时空分布特征。结果表明：汤村水库从水面到水面下12 m水温随气温变化而变化,库表水温在1.0~28.5℃之间变动,8月水库水温最高;水体水温随水体深度增加而下降,且沿水深方向下降梯度逐渐变小,1月水库表层水温与中下层水温基本一致;河道水温在坝址下游约3 000 m处恢复至天然河道水温,水库下泄水体温度对天然河道影响较小。
Water temperature stratification in reservoir affects the breeding of fish and growth of irrigation crops. In this paper,three-dimensional hydrodynamic model was established through EFDC software, simulated and analyzed the temperature distribution ofTangcun Reservoir, and based on the influence discipline of uncertain analysis, parameters were calibrated of predicting water temperature bytrial algorithm. The results show that from the surface to 12 m below water temperature varies with temperature changes; surface watertemperature is between 1.0-28.5 ℃; water temperature in reservoir reaches 28.5 ℃ in August which is the annual highest temperature, withthe water depth increases, the water temperature decreases, and descent gradient gradually decreases, in the following January, the surfacetemperature of the reservoir is basically consistent with the middle and lower temperatures; the temperature in river restoration to the naturaltemperature is at about 3,000 m downstream.
出处
《人民黄河》
CAS
北大核心
2016年第5期72-76,共5页
Yellow River
基金
国家自然科字基金资助项目(51309082)
关键词
EFDC模型
水温分层
参数率定
汤村水库
EFDC model
water temperature stratification
parameter calibration
Tangcun Reservoir
