浅析多年冻土路段路基施工的注意事项及处理措施

Analysis on Precautions and Treatment Measures of Subgrade Construction on Permafrost

本文依托青海省共和至玉树(结古)公路改扩建工程施工GYII-SGD5合同段为背景,该项目沿线气候严寒、地势高耸,属高寒大陆性半干旱气候,年平均气温-4.2℃,极端最低气温-48.1℃。因此沿线季节性冻土分布比较广泛。针对该项目中多年冻土区工程地质条件的复杂性,简要阐述多年冻土路段路基施工应注意的一些事项及本项目中采取的几种处理方法。

For the reason that seasonal frozen soil is widely spread along Gonghe-Yushu highway,and considering the climatic characteristics in this region,in this paper,taking the Gonghe-Yushu highway reconstruction and extension project as as engineering background,aiming at its complex engineering geological condition,the precautions and treatment measures of subgrade construction on permafrost are clarified.