METHOD FOR CARRYING DEBRIS OUT AT CONSTRUCTION WORK OF TUNNEL EXCAVATION

PURPOSE:To enhance stability in labor when carrying debris out at construction work of tunnel excavation and enhance efficiency in carrying the debris out and enable the extension of the operating distance of debris steel cars to be dealt with by solving the problem of air inside a pit being contaminated, and enabling continuous operation of the debris steel cars without being affected by the gradient of the tunnel. CONSTITUTION:An inward track 6 and an outward track 7 are laid parallel to each other from the working face of the inside of a tunnel up to the outside of the tunnel and a plurality of debris steel cars 30 are disposed on the tracks 6, 7. A cable wire 11 is coupled to each of the debris steel cars 30 and circulatory operation of the debris steel cars 30 is executed by means of movement of the cable wire 11, and the tracks 6, 7 are extended and the cable wire 11 is allowed out as the tunnel is excavated.