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抽水蓄能电站由于其特殊的运行方式,水库水温分布规律与常规电站水库不同.目前有关研究不多,而建立合适的抽水蓄能电站水库水温分布模型,对于确定大坝温度边界条件具有重要意义.采用类比库途径,根据类比库水温实测资料和呼和浩特抽水蓄能电站的特点,对朱伯芳法经验公式进行改进,提出可用于预测严寒地区抽水蓄能电站水库水温分布的简化模型.用简化模型对呼和浩特抽水蓄能电站下水库水温分布进行预测,并将结果作为温度边界条件,计算大坝稳定温度场.结果表明在水气交替范围内,大坝表面温度均匀分布,大坝全断面稳定温度均在10℃以下,符合严寒地区大坝稳定温度场分布规律.
Because of its special operating mode, the law of reservoir water temperature distribution is different from that of conventional power station reservoirs.Nowadays, there are few researches on it, and to establish a suitable reservoir water temperature distribution model for pumped storage power station is of great significance for determining the temperature boundary conditions of the dam Based on the measured data of analogue water temperature and the characteristics of Huhhot pumped storage power station, this paper improves the empirical formula of Zhu Bofang and proposes a simplified model which can be used to predict the distribution of water temperature in reservoirs in cold regions. The water temperature distribution in the lower reservoir of Hohhot Pumped Storage Power Station was predicted and the result was taken as the temperature boundary condition to calculate the stable temperature field of the dam.The results showed that the surface temperature of the dam was uniformly distributed and the steady temperature of the entire section of the dam Below 10 ℃, in line with the stability of the dam in the cold area temperature distribution of the law.