Apparatus for cutting the base rock and Blasting preparation structure achieved by the apparatus

摘要

The present invention relates to a blast preparation structure made by a rock cutting device and the rock cutting device. This removes the rock between a plurality of drilled holes which are spaced apart at predetermined intervals along the boundary line that partitions the inner area to be blasted on the free surface of the rock to be blasted, and disconnects the inside and the outside of the boundary line together with the drilled hole. A main body extending in the longitudinal direction to allow entry into the drilling hole and having an internal space; It is installed to be rotatable outside the front end of the main body when the main body enters the hole and proceeds to the circular saw to remove the rock between the adjacent hole with a predetermined width to communicate the internal space of the hole and; Drive means installed in the main body to rotate the circular saw by receiving external power; Located at the rear end of the main body, characterized in that it comprises a control unit for controlling the drive means. The present invention made as described above, the blasting by forming a slit of a predetermined width interconnecting the drilling holes between the plurality of drilling holes formed at regular intervals along the boundary line partitioning the inner area to be blasted on the rock to be blasted It is possible to reduce the amount of explosives to be used and to prevent the shock wave of the city from propagating outside the boundary line, and in particular, since the disconnection slit is formed by a circular saw, the shape of the wall surface after the blasting is constant due to the neatness of the wall.