Abstract:From January 10th to February 2nd, 2008, four rare low-temperature rain, snow and freezing weather events occurred consecutively in southern China.This disaster was characterized by a wide range, high intensity and long duration, thereby resulting in extremely serious economic losses and casualties.In addition, freezing rain, sleet, supercooled fog and other factors caused serious typical icing and secondary disasters, which in turn led to the lodging of electricity transmission and communication line towers, and interruption of power supply and communication and traffic transportation.Therefore, since 2009, the research team of this paper have carried out field experiments on wire icing and road icing, the results of which have progressed the research of wire icing from the traditional observation of icing meteorological conditions to a new highlight of comprehensive observation research regarding icing meteorological conditions and cloud and precipitation micro physics in icing weather events.The present paper reveals the micro physical mechanism of icing accretion, studies the icing accretion growth rate and its influencing factors, and establishes the icing accretion growth model, so as to better simulate the icing accretion growth process.Furthermore, observations on the temperature of the three underlying surfaces of asphalt, cement and soil and the temperature changes of different subgrade depths of expressways and bridges are carried out, and explanations are made from the perspective of energy balance.Based on the achievements of the research team, this paper studies and organizes the relevant representative research results, including the spatial and temporal distribution of ice accretion frequency, microphysical characteristics of icing weather, growth rate of ice and its influencing factors, meteorological conditions of icing, construction of ice growth model, and law of road icing growth and prediction, and proposes suggestions for the future research of wire icing.