AMMONIUM NITRATE FUEL OIL EXPLOSIVE FILLING CASE AND METHOD FOR ROCK BLASTING USING SAME

摘要

The present invention relates to an ammonium nitrate fuel oil explosive filling case and to a method for rock blasting using same for standardizing the amount of explosive to be filled and blasting a base rock and reducing vibration and noise when blasting. To this end, the ammonium nitrate fuel oil explosive filling case of the present invention comprises: an accommodation space (S1) inside the filling case so that the ammonium nitrate fuel oil explosive (1) can be filled therein; and a pocket housing (110) formed in a tube shape with an open upper portion, having a smaller diameter than a blasting hole (2) and inserted into the blasting hole (2), wherein the ammonium nitrate fuel oil explosive (1) particles used for blasting rocks are standardized. The method for rock blasting using the ammonium nitrate fuel oil filling case comprises the following steps: establishing a plan for shattering a rock; drilling a plurality of the blasting holes (2) on the rock to be blasted; filling a tubular case (100) with a predetermined amount of the ammonium nitrate fuel oil explosive (1) required for shattering the rock, and inserting the case (100) into the blasting hole (2); inserting a priming explosive (300) having a detonator (310) connected thereto into the inserted case (100); tamping the remaining space in the blast hole (2) with stemming material (320); and igniting the detonator (310) to shatter the rock to be blasted.