In order to promptly identify potential geological hazards of transmission lines,a method to assess the risk of soil erosion disasters on overhead transmission lines is proposed.Combined with the environmental characteristics,meteorological data and patrol related data of overhead transmission lines,the correlation between environmental characteristics and soil erosion disasters is quantified by association rules.Based on evidence theory,the basic reliability of soil erosion disasters is calculated using characteristic factors such as slope,aspect,position and altitude as evidence bodies.A probability calculation model for soil erosion disaster risk of overhead lines is constructed using the joint probability distribution function of rain and temperature disaster risk.Taking a 500 kV transmission line for example,the detailed calculation process of the evaluation model is analyzed,the risk levels of soil erosion disasters for the transmission line are divided,and the differentiated geological disaster risk prevention measures are proposed.This proposed method can effectively evaluate the risk of soil erosion disasters for overhead transmission lines,and provide theoretical support for the intelligent operation and maintenance management of the lines.
soil and water lossoverhead transmission linegeological hazardsrisk assessment
NETL
NSTL
维普
万方数据
