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以全风化云母石英片岩浅埋隧道施工中出现掌子面塌方,进一步带动已经成型段初期支护大面积变形进行处理的施工为例,介绍三台阶临时仰拱法在处置塌方和变形隧道中的应用。
Taking the collapse of the tunnel face during the construction of the shallow buried tunnel of fully weathered mica-quartz schist and further driving the large-area deformation support for the initial support of the forming section as an example, the three-step temporary inversion method is introduced in the treatment of landslides and deformation tunnels application.