SADDLE STRUCTURAL STEEL AND TUNNEL EXECUTION METHOD

摘要

PURPOSE: A saddle structure for a falling rock-blocking tunnel and a tunnel construction method using the saddle structure are provided to reduce the length of a work process and economically build the tunnel. CONSTITUTION: Plural saddles(30) to which pillar-shaped steels(1) and roof-shaped steels(2) are combined are installed inside retaining walls(3) installed on sides of a railroad track or a road. A connecting member(10) is fastened between the right roof-shaped steel and left roof-shaped steel by a bolt(11) and a nut(12). The upper width of the connecting member is wide and the lower width is narrow. A moving member(20), comprising a wheel and an adjusting bolt, is installed to each bottom portion of the right pillar-shaped steel and left pillar-shaped steel and thus the high and low of the saddle is adjusted and the wheels of the moving member move on rails.