本文以兰渝线铁路隧道施工为工况背景,以长锚杆作为隧道围岩变形控制的主要手段,介绍了隧道锚固数值模拟过程,简要分析了围岩稳定性,对于软弱围岩隧道,优化的长锚杆设置对围岩的加固效果优于普通锚杆设置.%According to the construction of railway tunnel in Lanyu line, in this paper, long bolt is the main method to control the displacement. It provides the process of numerical simulation of tunnel type anchorage and analyzes the stability of surrounding rock. In the soft surrounding rock tunnel,the reinforcement effect of the advanced long bolt is better than that of the common bolt.
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