ROCK LIFTING METHOD AND ROCK REMOVING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a rock lifting method of excellent versatility capable of reliably lifting a rock, and a rock removing method using the hoisting method.;SOLUTION: A hole 3 is drilled from a face side of the rock 2 to be hoisted. A hollow sheath pipe 4 with a tip 42 thereof expandable in the radial direction is inserted in the drilled hole 3. A rock drilling machine 5 is inserted in the hollow sheath pipe 4, and the tip 42 of the hollow sheath pipe is pressed by a pressing part 51 of the rock drilling machine 5 to allow the tip 42 of the hollow sheath pipe to be expanded in the radial direction and engaged with an inner wall surface of the drilled hole. A wire fitted to a tip of a boom of a heavy construction vehicle is fixed to the hollow sheath pipe 4, and the hollow sheath pipe 4 is lifted by operating the vehicle to lift the rock 2.;COPYRIGHT: (C)2002,JPO