通过对青藏铁路楚玛尔河地区碎石护坡路基长期监测数据的分析,对碎石护坡路基的地温、沉降进行了研究,评价了其工程长期稳定性,研究结论为:碎石护坡下冻土得到有效保护,地温场总体呈现降低趋势,竣工2年内冻土上限明显抬升;碎石护坡路基沉降变形表现为前期大,后期逐渐减小,截止到2007年的路基总沉降为43～70 mm,2007年沉降量为7 mm。对多年冻土运营铁路的维修养护提供了参考数据。 Based on the analysis of the long-term monitoring data of the gravel slope in the Qinghai-Tibet Railway, the paper studies the ground temperature and settlement of the gravel slope and evaluates the long-term stability of the project. The conclusion is that the permafrost After the completion of 2 years, the upper limit of permafrost increased obviously. The deformation and deformation of the gravel embankment showed a large decrease in the early stage and a gradual decrease in the later stage. The total subsidence of the subgrade was 43-70 mm in 2007, The settlement in 2007 was 7 mm. It provides reference data for the maintenance and repair of permafrost-operated railway.