Integrated blocking structure and method for high-water-pressure shield tunnel

The invention relates to the technical field of tunnel engineering, in particular to an integrated blocking structure and method for a high-water-pressure shield tunnel. The blocking structure comprises a blocking wall, buttress walls, a flood-proof safety door and a lane plate, the lane plate is longitudinally arranged along the tunnel, the blocking wall arranged along the cross section in the tunnel is arranged at the tail end of the lane plate, a door opening is formed in the blocking wall, the flood-proof safety door is matched with the door opening, and at least two buttress walls are vertically arranged on the lane plate. The upper ends of the buttress walls extend to be connected with the pipe pieces, a door opening is formed between every two adjacent buttress walls, and the buttress walls are connected with the blocking wall and extend in the longitudinal direction of the lane plate to be used for supporting the blocking wall. The blocking wall is arranged on the cross section in the tunnel, the bloc