The invention discloses a tunnel segment mounting mechanism and a mounting method thereof. The mounting mechanism comprises symmetrically-distributed supporting assemblies, each supporting
assembly comprises side plates, symmetrically-distributed mounting columns are arranged below the side plates, lifting columns are arranged in the mounting columns, a second hydraulic rod is arranged between the side plates, side face supporting assemblies are arranged at the two ends of the second hydraulic rod, a top supporting
assembly is arranged above the side plates, a moving
assembly is arranged on one side of the side plates and comprises a movable frame, a
rotating disc is arranged on the movable frame, a mounting assembly is arranged on the
rotating disc and comprises a second movable plate, and limiting assemblies which are symmetrically distributed are arranged on the second movable plate. The mounting mechanism is provided with a tunnel segment supporting structure capable of automatically moving, the angle, the height and the
radius can be adjusted according to
actual use scenes, the safety of tunnel segment mounting is greatly improved, positioning is accurate and fixing performance is good when the tunnel segments are mounted, the tunnel segments are prevented from falling off and shaking during rotating mounting, the inclined lifting design is adopted, and the mounting space is saved.