Assessment of Blasting-Induced Ground Vibration in an Open-Pit Mine under Different Rock Properties
Table 6
The blasting vibration data at bench of different rock properties.
No.
(kg)
(m)
(m)
(mm/s)
(mm/s)
(mm/s)
Difference (%)
1
1900
57
144
0.5
2.0
8.579
8.551
6.765
0
21
2
660
76
177
1.3
2.7
0.346
1.676
1.231
385
256
3
660
76
122
1.3
2.7
1.554
2.837
2.203
83
42
4
660
76
71
1.3
2.7
8.087
5.379
4.530
33
44
5
500
49
147
1.2
2.3
0.757
2.152
1.747
184
131
6
500
49
203
1.2
2.3
0.467
1.254
0.969
169
108
7
95
5
98
0.9
1.2
5.748
1.440
1.819
75
68
8
3515
102
15
0.5
1.5
61.029
52.937
62.651
13
3
9
3515
136
39
0.5
1.5
18.631
22.293
22.777
20
22
10
1770
150
713
1.0
2.6
0.158
0.346
0.201
120
27
11
830
87
3
0.3
2.4
33.838
19.737
34.558
42
2
12
126
216
114
0.8
1.4
0.149
0.160
0.166
7
12
13
81
134
206
0.5
1.3
0.105
0.093
0.101
11
4
14
81
134
66
0.5
1.3
1.538
0.292
0.381
81
75
15
81
60
10
0.5
1.3
7.521
2.782
5.061
63
33
: distances of shale or dolomite; : number of joints in shale or dolomite per 10 m; : predicted by Nicholls-USBM; : predicted by modified relationship.
