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高原多年冻土地区工程施工中,需要通过相应的工程结构和工程措施控制多年冻土的活动层(季节融化层)变化,使其上路基的运营变形控制在允许范围内.在介绍青藏高原地区多年冻土工程特性基础上,结合工程具体施工实践,针对冻土的冻融特性和多年冻土区的铁路路基各种处理类型的工作原理及施工工艺进行了简要阐述.
In the project of permafrost area plateau, it is necessary to control the change of the active layer (seasonal thawing layer) of the permafrost through the corresponding engineering structure and engineering measures so as to control the operation deformation of the embankment within the allowable range.In the introduction of the Qinghai-Tibet Plateau Based on the engineering characteristics of permafrost and the concrete construction practice of the project, the working principle and construction technology of various treatment types of railway embankment in permafrost region are briefly described according to the freeze-thaw characteristics of frozen soil.