路基边坡降雨入渗防治措施分析

The preventions against rainfall infiltration in subgrade slope

由于公路路基边坡地质灾害的发生率不断增加,尤其是在降雨入渗过程中,土的含水量急剧上升,土体的容重显著增加,边坡的整体性和稳定性系数大大折减,土体极容易发生变形破坏,文中对降雨入渗过程进行阶段划分:孕育阶段应该合理的种植边坡植被;潜存阶段需要依据雨量预警基准来疏散人群和车辆;而诱发阶段需要采取预应力锚索框架、锚杆框架、挡墙、护坡及排水等措施。因此,对路基边坡降雨入渗防治措施进行研究具有重要意义。

More and more geological disasters in highway subgrade slope have emerged in recent years, especially in the rainfall infiltration process. When the moisture content of soil increases sharply, and the bulk weight of the soil increases significantly, the integrity and stability coefficient of the slope decreases greatly. Thus the deformation and failure lead easily to the soil body. Three stages are provided to analyze the rainfall infiltration process： embryonic stage,latent stage and induction stage. Plant the slop vegelation in order to reduce the rate of the soil water infiltration capacity; disperse the crowd and vehicles according to the rainfall warning; provide the measures such as prestress anchorage cable, anchor frame, retaining wall, slope protection and drainage. Therefore, it is of very significance to study the prevention and control measures.