Construction method of crossing shallow-buried tunnel fault transition segment

The invention discloses a construction method of crossing a shallow-buried tunnel fault transition segment. The formation is solidified through curtain grouting, the mechanical property is changed, and the strength and integrity are improved; and a whole is formed by connecting a large pipe shed in the tunnel with a hard-and-soft formation in a lapping mode, the rigidity of soil is effectively increased, the shear capacity is improved, and the settlement deformation can be effectively suppressed when crossing a fault interface. The construction method of crossing the shallow-buried tunnel fault transition segment solves the problems that an existing method is used for constructing the geological and topographic conditions such as an F2 fault of an iron helmet mountain tunnel, and the construction risk is too high and risks are not controllable. The invention belongs to the technical field of tunnel construction. 本发明提供种穿越浅埋隧道断层过渡段施工方法，通过帷幕注浆对地层固结，改变力学性能，提高强度和整体性；洞内大管棚搭接软硬地层使其形成整体，有效的增加土体的刚性，提高抗剪能力，在穿越断层交界面时能有效