TBM tunneling surrounding rock arch support device

Abstract

This utility model discloses an arched support device for TBM tunneling surrounding rock, including a first arched frame, second arched frames connected to flanges on both sides of the first arched frame, support blocks fixedly connected to the side walls of the second arched frame, and support legs connected to the flanges on the other side of the second arched frame. A protrusion is fixedly connected to the upper surface of a right-angle plate, the upper surface of the right-angle plate fitting against the side wall of the support block, and the upper surface of the protrusion engaging with the inner cavity of the support block. The arched frames are made of HW125 and HW175 steel, bent by a steel bending machine. For ease of transportation and installation, bolted flange connections are used during installation. Each section end is reinforced by welding, and locking anchor rods are used to securely fix the frame through the through-holes of the first arched frame. The arched frame material and sufficient reinforcement, combined with hydraulic support, are used to strengthen the support force and enhance the connection between structures, ensuring the reliability and safety of the reinforcement.

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