高海拔季节性冻土路基预防冻胀融沉施工方法——以甘肃S232项目为例

Construction Method for Preventing Frost Heaving and Thaw Settlement of Seasonal Frozen Soil Subgrade at High Altitude—Taking Gansu S232 Project as an Example

为解决高海拔季节性冻土冻胀融沉问题,文章以甘肃S232项目为例,通过对路基填料、路基排水方式的研究,形成了一套成熟的高海拔季节性冻土路基预防冻胀融沉施工方法。详细介绍了高海拔季节性冻土路基预防冻胀融沉施工工艺原理、流程以及施工要点,实践证明,该施工方法切实解决了季节性冻土路基预防冻胀融沉问题,能保证高海拔季节性路基施工质量,在降低质量风险的同时加快了施工进度,值得推广应用。

In order to solve the problem of frost heaving and thaw settlement of seasonal frozen soil at high altitude,this paper takes Gansu S232 project as an example,and forms a set of mature construction methods for preventing frost heaving and thaw settlement of seasonal frozen soil subgrade at high altitude through research on subgrade filling and drainage methods.The construction technology principle,process and key points of preventing frost heaving and thaw settlement of seasonal frozen soil subgrade at high altitude are introduced in detail.Practice has proved that this construction method can effectively solve the problem of preventing frost heaving and thaw settlement of seasonal frozen soil subgrade,ensure the construction quality of seasonal subgrade at high altitude,reduce the quality risk and speed up the construction progress,which is worthy of popularization and application.