黄河三门峡水库不同运行期水温状况分析

三门峡水库自1960年9月15日正式蓄水运用以来，由于泥沙淤积的影响，水库先后经历了蓄水运用期，滞洪排沙运用期，“蓄清排浑”运用期3个不同的运行阶段。不同时期由于水库调节能力不同，水库水温结构也发生了相应的变化，全面系统地分析三门峡水库建库前后下泄温变化，库表水温与气温的关系以及“蓄清排浑”运用水库水温分布状况，对多泥沙河流水库水温预测具有重要的意义。

Water temperature analysis of Sanmenxia reservoir in different operation stages

Since the Sanmenxia reservoir filling and put into operation on Septembber 15, 1960, due to sedimentation the reservoir has experienced 3 different operation stages, i.e. filling and application, flood detention and silt sluicing and filling clear water and releasing silt water. In different stages, due to its different regulation capability the water temperature structure in the reservoir changed correspondingly. Comprehensive and systematic analysis on water temperature before and after the reservoir construction, relation of air temperature and reservoir surface water temperature, and water temperature distribution of the reservoir in the stage of filling clear water and discharging silt water is of great significance to water temperature prediction of reservoirs on silt-laden rivers.