Vertical shaft prefabricated lining structure and vertical shaft excavation method

The invention belongs to the technical field of vertical shaft excavation, and particularly discloses a vertical shaft prefabricated lining structure which comprises a well body, and a ring beam is arranged at the top of the well body; the primary supporting structure is located on the inner side of the well body and tightly attached to the inner wall of the well body; the secondary lining structure is formed by splicing a plurality of lining blocks, the secondary lining structure is located on the inner side of the primary supporting structure, a gap is reserved between the secondary lining structure and the primary supporting structure, and concrete is poured into the gap; magnifying foot supports are arranged on the outer wall of the secondary lining structure, grooves are reserved in the well bore body and the primary supporting structure, and the magnifying foot supports are located in the grooves; and grouting anchor pipes are arranged at the top and the bottom of the amplification foot support correspo