高寒多年冻土地区公路工程与一般地区有较大的区别,多年冻土活动层直接控制着路基稳定性。通过对祁连山南坡刚察~江仓公路沿线现场调查,分析了路基沉陷、冻胀、道路翻浆、边坡滑塌和冰害等病害特征和成因,从施工技术、环境条件和成本出发,提出了适当提高路基高度、设置护坡、加强排水等措施。 The alpine and frozen permafrost area highway project has the bigger difference with the general area, the permafrost active layer directly controls the subgrade stability. Based on the field investigation from Gangcha to Jiangcang Highway on the southern slope of Qilian Mountains, the characteristics and causes of the subsidence, frost heave, road dumping, slope slip and ice damage were analyzed. Based on the construction technology, environmental conditions and cost, Appropriate to improve the height of subgrade, set up slope protection, strengthen drainage and other measures.