Numerical Investigation on Influential Factors for Quality of Smooth Blasting in Rock Tunnels

Table 8

Calculated results.

Test no.	Cross-section area (m^2)	Underbreak area (m^2)	Overbreak area (m^2)	Maximum distance of overbreak (m)	Maximum distance of underbreak (m)
1	154.29	0.78	9.97	1.1	0.53
2	158.45	0.57	13.92	0.86	0.38
3	148.32	3.9	7.12	1.18	0.56
4	154.55	1.63	11.08	0.85	0.34
5	147.4	2.04	4.34	0.42	0.54
6	145	2.71	2.61	0.43	0.52
7	153.77	0.94	9.61	0.99	0.53
8	165.94	0.11	20.95	1.17	0.26
9	163.79	0.02	18.71	0.84	0.13
10	167.48	0.00	22.38	0.97	0.00
11	152.46	0.15	7.51	0.43	0.23
12	152.18	0.27	7.35	0.48	0.25
13	151.81	0.44	7.15	0.46	0.44
14	151.76	0.39	7.05	0.82	0.42
15	166.69	0.00	21.59	0.91	0.00
16	163.89	0.01	18.8	0.96	0.04