公路翻浆机理浅析及其治理方案初探

Study on mechanism and treatment scheme of highway frost boiling

公路翻浆致使路基破坏,公路车辆不能正常行驶,年年需要维修,耗资不菲。道路翻浆与地基土岩性及其地基土的水理性质紧密相关。冬季土质地基结冻,春季解冻地基土从上、下同时融化,完全融化前,中间总有一层没融化,就是这一层起到隔水层作用,地基土中地下水排泄不畅,滞留地基土中,造成该层地基土呈过饱和状态,承载力大大降低,经车辆碾压造成路基翻浆。

Highway frost boiling made the subgrade damaged, which make vehicles cannot run, and annual repair were expensive. Road frost boiling, soil lithology and water physical properties of subsoil are closely related. Soil foundation froze in winter, which thaws in the spring. Before it melt completely, there is one middle layer not melted, which plays a role of aquiclude. Groundwater excreted not free, reserved in the foundation soil, causing the layer’s state hypersaturated, reducing the bearing capacity, the end result caused subgrade frost boiling by vehicle rolling.