本文对青藏铁路在清水河工点的涵洞的地温周期观测数据的分析,对该地区气温与地温变化的规律和相关性进行了研究,并得到了一些有益的结论,找出了涵洞下一定深度范围内冻土的地温变化规律,从而为沿线以多年冻土为地基地段的稳定性演化趋势及沿线涵洞的维修治理提供切实的依据。 This paper analyzes the geothermal cycle observation data of Qinghai-Tibet Railway’s culvert at the worksite of Qingshuihe River, studies the regularity and correlation of the change of temperature and ground temperature in this area, and obtains some useful conclusions. Which can provide a solid foundation for the stability evolution of permafrost along the line and the maintenance of culverts along the culverts.