Arch protection mounting structure suitable for temporary reinforcement of tunnel

The utility model belongs to the technical field of tunnel construction, and particularly relates to a protective arch mounting structure suitable for tunnel temporary reinforcement, which comprises a support connecting plate, two vertical support beams symmetrically arranged on the top plate surface of the support connecting plate, and a jacking cross beam fixed at the tops of the vertical support beams, the bottom plate surface of the jacking cross beam is tightly pressed on the top end surface of a jacking rod of the hydraulic jack, and the bottom of the hydraulic jack is fixed on the precast concrete cushion block; an unloading frame is arranged between the prefabricated concrete cushion block and the supporting connecting plate, the top of the unloading frame and the bottom of the supporting connecting plate and/or the bottom of the vertical supporting beam are fixed into a whole through bolts, and the unloading frame tightly abuts against the top plate face of the prefabricated concrete cushion block. D