The ice cover formation of the reservoir in cold region has an important influence on power station operation,dam safety, water temperature and quality. Based on thermodynamics theory, the vertical 1D temperature model, which considered the process of ice cover growth and decay, was established to investigate the influence of ice on temperature in the reservoir. The heat transport simulation of heat exchange of ice and air, ice and water, heat conduction in the water was realized and verified by laboratory experiment. Application results showed that this model can well simulate the process of ice cover growth and decay and the vertical water temperature.
