Analysis and Calculation of Designed Line Icing Thickness in Medium and Light Icing Regions

Because of lack of data in medium and light icing regions,it is very hard to count icing frequencies,resulting in difficulty in choosing reasonable designed line icing thickness.Based on the concept of icing strength,a simple analytic model of icing reappearing period is proposed to solve the problem.It assumes that the changing rates of icing thickness of neighboring regions within same climate zone are similar.Therefore,experience relationship for icing thickness in south Yangtzi River regions in Anhui is derived and validated.