| 摘要 |
PURPOSE: A bending type protector structure and a tunnel expansion method for a tunnel using the same are provided to stably expand the cross section of a tunnel by easily installing the protector structure even in a curved section of the tunnel. CONSTITUTION: A bending type protector structure(300) is formed by coupling multiple protector units to each other. Each protector unit is composed of first and second protectors(310,320) and has vertical walls(31), a horizontal plate(32), and wheel members(33). The vertical walls face each other. The horizontal plate crosses the gap between the vertical walls. The wheel members are formed on the bottom ends of the vertical walls for horizontal movement. The first and second protectors continuously arranged are coupled to a first overlap plate(311) and a second overlap plate using a coupling pin(50). A pair of extensible jack devices(40) are installed on the side surfaces of the vertical walls of the first and second protectors. Bending walls(34) are installed to block the gap between the vertical walls of the first and second protectors. |
