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山区铁路严寒地区,每到冬季线路发生冻害,线路变形,严重威胁着行车安全,并给日常维修带来很大困难,人力物力浪费很大。如我段京原线K175～K205,K212～K234区间,每年冬季1、2月份开始,线路上出现冻害近七、八百起。冻起高度最大150mm左右,一般的到次年的3、4月份冻害才能回落。这段时间,线路变形变化很大,线路成了波浪形。为了保证行车安全,不得不打乱工区的正常维修,从1、2月份到次年4月份,迫使80％以上劳力全部投入整治冻害,年年如此。如何减少冻害,消灭冻害是工务急待解决的一项重要工作。
In the cold area of mountainous railroad, freezing frost damage and line deformation occur in every winter line, which seriously threaten traffic safety and bring great difficulties to routine maintenance. As a result, manpower and material resources are wasted greatly. As I paragraph Jingyuan line K175 ~ K205, K212 ~ K234 range, each winter in January and February, the line appeared frost damage nearly seven or eight hundred. Frozen the maximum height of about 150mm, the general to the next year in March and April frost damage can fall. During this time, the deformation of the line changed greatly and the line became wavy. In order to ensure traffic safety, we have to disrupt the normal maintenance of the work area. From January to February and April of the next year, more than 80% of all labor force is forced to put into rectification and freeze every year. How to reduce frost damage and eliminate frost damage is an urgent task to solve.