【摘要】 针对昆-石高速公路阳宗隧道断面跨度大的特点,通过经济技术、操作难易程度的综合比较,阳宗隧道使用WTD系统锚杆支护对围岩进行加固,效果良好。使用高性能混凝土作为隧道二次衬砌,降低病害的发生,减少整治麻烦,给隧道施工和运营都带来极大的方便。采用地层-结构模式,运用同济曙光软件分析地质条件较差的Ⅴ级围岩隧道施工方法对围岩稳定性的扰动规律,计算结果表明施工方法选择合理;采用荷载-结构模式,应用有限元软件—ANSYS对二衬结构的安全性进行检算,计算结果表明该隧道衬砌结构设计合理、安全性好。更多还原

【Abstract】 Based on the characteristic of large-span of Yangzong tunnel of kunming-Shilin expressway and through analyzing different operating plans, WTD systematic bolts are used in Yangzong tunnel, which is high praised by engineers. In addition, high-performance concrete is used in lining in Yangzong tunnel and this makes tunnel construction and operation become easier. This paper analyzes the influence rules of tunnel construction on No.Ⅴ surrounding rock stability using finite element program—Tongjishuguang by individual body model, and numerical results prove that the construction method is very reasonable. Then the safety of lining is tested using finite element program—ANSYS by action-reaction model, numerical results prove that the design of lining is very reasonable and the lining has a high security.更多还原