高速公路路基边坡开裂滑移的加固处理技术

Reinforcement Technology for Cracking and Sliding of Expressway Roadbed Slope

针对现阶段高速公路边坡病害现象频发的问题,研究了一种高速公路路基边坡开裂滑移的加固处理技术。根据高速公路路基边坡项目的基本情况,综合分析路基边坡发生开裂、滑移病害的主要原因,从锚固处理、生态加固处理以及抗滑桩加固处理等方面入手,设计开裂滑移病害的修护管理方案,应用加固处理技术,完成修复工作。结果显示,对于随机的10处高速公路路基边坡测点,分别在正常工况、暴雨天气以及地震条件下,加固处理施工后的边坡稳定安全系数均大于实际工程的最低标准1.25,经过加固处理后,土壤的抗剪强度平均提高了25%,压缩模量平均增加了15%,渗透系数平均降低了30%。

In response to the frequent occurrence of slope diseases on highways at present,a reinforcement technology for cracking and sliding of highway roadbed slopes was studied.Based on the basic information of the highway subgrade slope project,comprehensively analyze the main causes of cracking and sliding diseases in the subgrade slope.Starting from the aspects of anchorage treatment,ecological reinforcement treatment and anti-slide pile reinforcement treatment,the repair and management scheme of cracking and sliding diseases is designed.Apply reinforcement treatment technology,and complete the repair work.The results show that,for 10 random expressway subgrade slope measuring points,under normal conditions,rainstorm weather and earthquake conditions respectively,the slope stability safety factors after reinforcement construction are greater than the minimum standard 1.25 of the actual project.After reinforcement,the shear strength of the soil has increased by 25%on average,the compression modulus has increased by 15%on average,and the permeability coefficient has decreased by 30%on average.