多年冻土区斜坡路堤稳定性的探索

摘要

Research purposes; Plateau, permafrost and environmental problems are the three major problems in the construction of Qinghai - Tibet railway, and its particularity and complexity are unique in the world history of railway. The stability of embankment on slope in permafrost regions is extremely complexity and variability due to the unique environment and climate conditions. Therefore, it is necessary to study on the stability of embankment on slope to ensure the long term stability and operation safety of Qinghai - Tibet railway.Research conclusions;The stability calculation of embankment slope in permafrost regions not only refers to ordinary slope analysis methods, but also considers the time factor. In addition, the stability reinforcement of embankment slope still can take the following methods, such as the selection of filter, the geogrid, the anti - slide piles, and so on. The results drawn in this paper can provide reference to the construction and management of plateau railway in the future.%研究目的:高原、冻土和环境问题是青藏铁路建设的三大难题,其特殊性和复杂性在世界铁路史上独一无二.由于独特的环境和气候条件,导致青藏铁路多年冻土区斜坡路堤的稳定性异常复杂并具有多变性.因此,为保证青藏铁路路基长期稳定和运营安全,应加强对多年冻土区斜坡路堤的系统研究.研究结论:多年冻土斜坡路堤的稳定性计算,不仅要参考普通斜坡分析的方法,也要考虑边坡失稳的时间因素；除此以外,还可以从填料的选取、铺设土工格栅、采用抗滑桩加固等方面提高多年冻土地区斜坡路堤的稳定性,通过本文研究希望能对今后的高原铁路建设及运营管理提供参考和借鉴.