高寒区多年冻土地区,由于路基的修建,改变了原有永冻土地质的水热状况,引起水热的重分布,破坏了原有热平衡,导致路基的融沉、塌陷、路面裂缝等病害,交通无法正常行驶或中断交通,影响道路使用寿命。不同施气候环境下采用相应的合理施工措施既能加快施工进度,又能保证路基施工质量 In permafrost areas of alpine area, due to the construction of roadbed, the hydrothermal conditions in the original permafrost have been changed, causing the water and heat to redistribute, destroying the original heat balance, leading to the sinking, collapse and pavement cracks of the roadbed. , The traffic can not normally drive or interrupt the traffic, affecting the service life of the road. Under different climate conditions, the corresponding reasonable construction measures can speed up the construction progress and ensure the quality of subgrade construction