湖南镇水电站的坝前水温分布规律

THE DISTRIBUTION REGULARITY OF WATER TEMPERATURE ON THE DAM FACE OF HUNANZHEN HYDROPOWER STATION

库水温度为混凝土坝设计中的一项重要参数，但至今对此缺乏研究，仍然沿用深水湖泊中“静水”的概念。认为库内水温均呈水平层状分布，对枢纽的不同类型建筑物前沿的状况不加区分。最新研究成果表明，枢纽前沿同一水深的水温在纵向可能存在着显著差异，湖南镇水电站为我们提供了一份宝贵的实例，可供今后大坝运行、设计人士参考。

The water temperature is an important parameter for the design of concrete dams, but study in this aspect is rare. It is assumed that the same temperature exists at the same depth beneath the water surface like standing water in a deep lake. So the temperature distribution over an upstream dam surface is assumed to be the same whether the construction is an overflow monolith or a water retaining monolith. Sometimes largely different values exist. This paper presents a valuable example for the designer and operator of dams.