| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete crushing method in which blasting vibration can be reduced to be transmitted to an object point around a blasting work site where the blasting vibration is desirably reduced, and a concrete can be efficiently crushed.SOLUTION: Around the blasting work site for crushing a concrete 1 to be crushed, an object point 4 is determined where the blasting vibration is desirably suppressed. One explosive loading hole formed in the concrete at a point farthest from the object point 4 or a plurality of explosive loading holes including one explosive loading hole are determined as a first group A. A plurality of explosive loading holes formed in the concrete 1, excluding the explosive loading holes as the first group A, are grouped as a plurality of groups B-E. After blasting work is performed for blasting explosives loaded in the explosive loading holes as the first group A, blasting work is performed for blasting explosives loaded in the explosive loading holes as the other groups B-E. |
