大石桥工务段,过去由于缺少实际轨温调查资料,沿用旧的气温数据,编排维修计划,组织维修工作,因此盲目性很大,经常发生超温作业,降低了无缝线路的强度,曾发生过数起涨轨跑道和断轨事故,无缝线路质量也未能得到均衡的提高。 1982年大石桥工务段开始进行轨温调查,经过三年观测的结果,初步掌握了轨温同气温的温差关系和日、旬、月轨温变化情况。于 Dashiqiao Public Works Section, in the past due to the lack of actual rail temperature survey data, the use of old temperature data, layout maintenance plans, organize maintenance work, so blindness, often over-temperature operation, reducing the strength of the seamless line, once There have been several orbital accidents and runway incidents, seamless line quality has not been able to achieve a balanced increase. 1982 Dashiqiao work began to track temperature survey, after three years of observation results, initially mastered the temperature and temperature temperature and temperature differences between the day, ten, month rail temperature changes. in