喀斯特地区单洞4车道隧道支护参数及开挖方法探讨

摘要

Based on a case of Lingshan tunnel in constructing of the one point five Ring Road,Guiyang City,the finite element method and engineering analogy are used to protocol supporting structure pa-rameters and excavation method,in view of the different construction procedures,the stress of tunnel supporting structure and the stability of surrounding rock are simulated and analyzed to prove that the proposed support parameters and excavation method are reasonable,safe and feasible.%以贵阳市1．5环在建黔灵山隧道为背景，运用有限元数值模拟方法，结合工程类比的方式拟定该隧道的支护结构参数及开挖方法，针对不同的施工步骤，对隧道支护结构的应力及围岩的稳定性进行模拟分析，以达到其支护参数和施工方法合理、安全、可行。