Experimental Study on Vibration Reduction Technology of Hole-by-Hole Presplitting Blasting

Table 6

Comparative analysis of blasting vibration by presplit holes detonated hole-by-hole.

(kg)		(m)	(m)	(cm/s)	(cm/s)	(%)	(%)
446	1#	70.0	1.0	1.78	3.98	55.25%	47.36%
	2#	90.0	11.0	1.04	1.75	40.72%
	3#	120.0	21.0	0.39	0.72	46.10%
395	1#	75.0	0.5	1.74	3.57	51.30%	44.21%
	2#	100.0	10.5	0.90	1.31	31.50%
	3#	120.0	20.5	0.33	0.66	49.84%
355	1#	90.0	1.0	1.65	2.35	29.77%	32.79%
	2#	110.0	11.0	0.88	1.01	13.22%
	3#	120.0	21.0	0.27	0.61	55.38%