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深水水库的低温水效应明显,以往常采用叠梁门、多层取水口等结构解决下泄低温水问题,但此类方案需在水库投入运行前完成且会造成一定的发电损失。针对已投入运行但未设计建设分层取水设施的水库水温问题,本文提出了在电站进水口前设置隔水幕布的新型水库低温水治理方案,建立三维水动力水温数值模拟模型,模拟分析了隔水幕布改善水库下泄低温水的效果及其主要影响因素。模拟结果表明,隔水幕布可使春夏季水库下泄水温提高2~8℃,幕布型式、淹没水深和坝前水温分布是影响改善效果的主要因素;并基于上述结论提出了隔水幕布方案的下泄水温预测公式。隔水幕布改善水库低温水的效果良好,具有广泛的推广应用前景。
The low temperature water effect of Sham Shui Po reservoir is obvious. In the past, the problems of low temperature and low temperature water discharge were solved by adopting the structure of multi-beam door and multi-layer water intakes. However, such schemes need to be completed before the reservoir is put into operation and cause some power generation loss. In view of the problem of reservoir water temperature which has been put into operation but not designed to construct stratified water intake facilities, this paper proposes a new reservoir low temperature water treatment scheme with water curtain installed in front of the water inlet of the power station, and establishes a three-dimensional numerical simulation model of hydrothermal water temperature. Effect of Water Curtain on Improving Low Temperature Water Release of Reservoir and Its Main Influencing Factors. The simulation results show that the water curtain can improve the discharge temperature of spring and summer reservoirs by 2 ~ 8 ℃, and the curtain type, submerged depth and water temperature distribution in front of the dam are the main factors that affect the improvement effect. Based on the above conclusions, the curtain drains Water temperature prediction formula. Water curtain to improve the effect of low temperature water reservoir is good, with a wide range of promotion and application prospects.