高海拔地区多年冻土地段片块石通风路基施工关键技术研究

Research on Key Technology of Slab Stone Ventilation Roadbed Construction in Permafrost Regions of High Altitude Area

随着国家西部大开发战略的实施和玉树地震灾后重建工作的进行,国家加大了对该区域交通基础设施的投资。由于该区域海拔较高,部分区域均分布着多年冻土,如何在冻土区域进行路基工程的施工,并防止路基修建后的冻融沉降,减少路基病害,成了施工中面临的重要问题。文章以玉树地区治多至杂多公路的修建为例,详细介绍了高海拔地区片块石通风路基施工的工艺。

With the implementation of the country's western development strategy and the post-earthquake reconstruction work in Yushu,the state has increased its investment in transportation infrastructure in the region.Due to the high altitude in the area,permafrost is distributed in some areas.How to carry out the construction of subgrade works in the frozen soil area, prevent the freezing and thawing settlement after the roadbed construction,and reduce the roadbed diseases have become an important issue in the construction.This paper took the construction of the Yushu area to the Zaduo road as an example,and introduced the construction process of the block stone ventilation roadbed in the high altitude area.