Supporting structure for tunnel and underground tunnel construction method using the same

摘要

PURPOSE: A support structure for a tunnel is provided to reinforce and stabilize a steel structure structurally and to structurize a steel structure permanently. CONSTITUTION: The support structure for a tunnel comprises: steel timbering(10) installed adjacently to the earth part excavated along the section shape of a tunnel at regular intervals, and provided with a coating layer mixed with glass fiber and made with epoxy resins; a lining structure(20) formed by placing concrete in an interval of the steel timbering(10); grout(30) injected to the back of the lining structure(20); a waterproofing plane(40) formed on the surface of the lining structure(20) using a sheet; a shield(50) formed by installing a wire mesh on the waterproofing plane(40) and placing shotcrete or lightweight concrete; and a finishing plane(60) attached to finish up the outside of the shield(50).