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我局地处寒冷地区，由于年轨气温变化幅度大，使长钢轨内部存在很大温度力，也给长钢轨防胀、防断带来很大困难．本文针对寒冷地区无缝线路的特点，探讨其防胀、防断的措施．
Our bureau is located in the cold area. Due to the large temperature change of the annual orbit, there is a great temperature force inside the long rail, which also brings great difficulties to anti-inflation and anti-breakage of the long rail. This article aims at the characteristics of the seamless line in the cold area and explores the anti-swelling and anti-break measures.