Construction Method of Eco-friendly Tunnel Shaft using Steelform and Segment

摘要

The eco-friendly tunnel shaft construction method according to the present invention includes the steps of manufacturing and installing a steel foam to be prepared at the time of the tunnel, excavating the tunnel entrance and moving the steel foam using a hydraulic jack, and a working space using the steel foam. Securing, installing a segment at the rear end of the steel foam, grouting the segment rear space, and dismantling the steel foam, moving the segment, and excavating a tunnel, wherein the steel foam The front end is provided with an extension blocking portion protruding in the direction of excavation to prevent falling objects, and the rear end of the steel foam is securely connected to the segment to be connected subsequently by providing a segment connection protruding in the direction opposite to the excavation progress, and the extension blocking unit and The segment connection unit is characterized in that it determines the size, thickness, material, and conditions for attaching and detaching according to a preset value or an environmental condition in which excavation proceeds.