Analysis of the Cavity Formation Mechanism of Wedge Cut Blasting in Hard Rock

Table 3

Statistics of cut holes.

No.	Hole length (cm)	Advance per round (cm)	Utilization rate of boreholes (%)	Average value (%)
1	300	278	92.7	91.6
2	300	275	91.7
3	300	273	91.0
4	300	278	92.7
5	300	267	89.0
6	300	280	93.3
7	300	273	91.0
8	300	276	92.0
9	300	275	91.7
10	300	275	91.7
11	300	277	92.3
12	300	271	90.3