摘要
为掌握多台阶岩质边坡在开挖过程中的动态变形特性及预应力锚索加固对其稳定性的影响,以具体岩质边坡工程为例,利用FLAC3D模拟分析其在开挖过程中及形成后的变形特征;对比分析两种加固方案时的加固效应。研究结果表明,开挖易使局部岩体发生破坏;预应力锚索的使用使岩体边坡的安全系数提高了21.3%;采用边开挖边支护方案能很好地约束岩体水平位移,并可有效改善边坡的应力分布。
In order to grasp the dynamic deformation characteristics and the influence of prestressed cable reinforcement on the excavation process, this paper takes the concrete rock slope engineering as an example, using FLAC3D simulation to analyze the deformation characteristics of the excavation process and the deformation characteristics of the rock slope. The results show that the excavation is easy to cause the local rock mass destruction; the safety factor of the rock slope is improved by 21.3% because of using prestressed cable; the scheme of edge excavation and support can very well constrained rock mass horizontal displacement, and effectively improve stress distribution of the slope.
出处
《建筑技术》
北大核心
2017年第3期293-295,共3页
Architecture Technology
