MECHANICAL ROCK EXCAVATING METHOD USING A DETONATING CORD TO OBTAIN A DETONATION PRESSURE APPLIED TO A BORE HOLE

摘要

PURPOSE: A mechanical rock excavating method using a detonating cord is provided to form a cracked section close to an underground rock substance without generating vibrations, noises, and dust.;CONSTITUTION: A mechanical rock excavating method using a detonating cord comprises the steps of: punching a plurality of bore holes(S10), inserting detonating cords and a detonating cap in some or all of the bore holes(S20), injecting a filler in the gap between the detonating cord and the bore hole inner wall(S30), forming a crack line in rock by blasting the detonating cord with the detonating cap(S50), and crushing the rock with a mechanical crusher(S60).;COPYRIGHT KIPO 2010