Blast Parameter Optimization Study Based on a Blast Crater Experiment

Table 6

The blasting quality of six perfectly square patterns.

Number	Holes spacing/m	Resistance line/m	Blasting area/m^2	Rock volume blasted/m^3	Bulk yield/%
1	4	4	16	146.0	0.067
2	5	5	25	252.7	0.156
3	6	6	36	383.0	0.266
4	6.837	6.837	46.75	510.3	0.373
5	7	7	49	537.1	0.396
6	8	8	64	714.8	0.546