高等级公路穿越山区时 ,通常需要开挖而形成路堑边坡 ,其边坡的稳定性将危及公路施工和运营安全 ,故常需要对不稳定边坡进行加固处理。对具有大体积、大面积范围且存在滑动面的不稳定岩土体 ,加固方法以预应力锚索为佳。在结合某高等级公路路堑高边坡工程中 ,分析了已有地质条件的基础上 ,提出了预应力锚索加固边坡的设计方案 When passing through mountainous areas, high-grade highways usually need to be excavated to form cutting slopes. The stability of slopes will endanger the construction and operation of roads. Therefore, unstable slopes are often required to be reinforced. For unstable rock mass with large volume, large area and sliding surface, the method of reinforcement is prestressed anchor cable. Based on the analysis of the existing geological conditions in combination with the high slope of high-grade highway highway slope, the design scheme of prestressed anchorage cable reinforcement slope