SHOCK-ABSORBING ROCK BLASTING METHOD TO REDUCE VIBRATIONS AND NOISE DURING BLASTING BY SEALING THE GAP BETWEEN AN EXPLOSIVE AND A BORE HOLE WALL

摘要

PURPOSE: A shock-absorbing rock blasting method is provided to reduce the blasting pressure applied to a bore hole by filling the gap between an explosive and a bore hole wall.;CONSTITUTION: A shock-absorbing rock blasting method comprises the steps of: punching a bore hole(S10), inserting a guide pipe in the bore hole(S20), inserting an explosive in the bore hole(S30), placing a buffer material in the bore hole(S40), and removing the guide pipe(S50). A vinyl cover is installed on the outside of the guide pipe and inserted into the bore hole together with the guide pipe. The vinyl cover is left in the bore hole when the guide pipe is removed.;COPYRIGHT KIPO 2010