兰永线顺层岩质边坡稳定性及治理措施研究

以兰永线一级公路路堑边坡为工程背景，阐述了节理顺层边坡破坏模式和讨论了边坡稳定性的影响因素，同时对其支护措施进行论述，并利用岩土分析软件PLAXIS进行了数值分析计算。分析结果表明:边坡的最大位移不一定发生在坡脚，而是发生在坡脚之上第一个节理层位置处；其次采用强度折减法研究稳定性，节理层岩体特性对稳定性的变化影响较大；边坡采用板墙加预应力锚索治理措施，确保了边坡的稳定。

Study on Stability and Control Measures of Bedding Rock Slope along Lan-Yong Route

Taking the cutting slope along the first-grade highway of LAN-YONG route as the engineering background, this paper described the failure mode of the bedding joint slope and discussed the factors affecting the slope stability and its supporting measures. With geotechnical analysis software, PLAXIS, further numerical simulation was carried out. The results show that the maximum displacement of slope may not occur at the toe, but the first joint layer above the toe; and then by strength reduction method, the stability is studied that the characteristics of rock mass in joint layers has large influence on variation of stability; plate wall with prestressed anchor cable is used as the control measures, ensuring the slope stability.