Sand damage control and effect at main sections of Qinghai-Tibet railway

Ever since the Qinghai-Tibet railway was built up,it has been suffering more and more seriously from sand damage,which threatens the safe operation of the railway,thus,it is in great eager to control sand damage along the railway.In this paper,types,characteristics,control and its effect for sand damage were researched by field investigation and laboratory analysis in 6 sections along the Qinghai-Tibet Railway,namely Hongliang river,Xiushui-Beilu river,Tuotuo river,Tongtian river,Zhajiazangbu,and Cuona lake.It is suggested that the sand prevention of Qinghai-Tibet railway should dominated by biological measures,and vegetation restoration served by mechanical measures.The research aims to deepen the understanding of sand damage of railway in high and cold area,and provides the basis for sand damage prevention of Qinghai-Tibet railway.