Connecting mechanism between tunnel supporting structure and tunnel

The utility model provides a connecting mechanism between a tunnel supporting structure and a tunnel, and relates to the technical field of tunnel building, the connecting mechanism comprises a tunnel supporting mechanism, the tunnel supporting mechanism comprises a tunnel inner wall, a connecting fixing column is installed on the side face of the tunnel inner wall in a penetrating mode, and a first fixing block is fixedly installed on the inner wall of the tunnel inner wall in a surrounding mode; a connecting groove is fixedly formed in the inner wall of the tunnel inner wall, a supporting rod is fixedly installed on one side face of the fixing block through a bolt, a connecting block is fixedly installed on the inner wall of the tunnel inner wall, and a connector is fixedly installed on the side face of the connecting block. By means of the designed supporting structure, the limiting telescopic rods are fixedly installed between the tunnel inner wall and the outer side supporting plate, the outer side suppo