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在隧道施工过程中,围岩类别经常不断变化,按照新奥法的设计施工理论和“岩变我变”的主导思想,当隧道围岩发生变化时,隧道支护参数、开挖方法、施工工序、都应该做相应的调整,但公路隧道施工过程中的围岩变更历来是一个争议较大的问题。文章针对公路隧道施工过程中的围岩变更存在的问题,在“岩变我变”的指导思想基础上,给出了公路隧道围岩变更的程序和方法。
In the process of tunnel construction, the types of surrounding rock are constantly changing. According to the design and construction theory of New Austrian Law and the dominant ideology of “rock change”, when the surrounding rock of the tunnel changes, the tunnel support parameters, excavation methods, construction Procedures should be adjusted accordingly, but the surrounding rock during the construction of highway tunnels has always been a controversial issue of change. In this paper, aiming at the problems existing in the surrounding rock alteration during the construction of highway tunnels, the procedure and method of changing the surrounding rock of highway tunnels are given based on the guiding ideology of “rock changing me”.