Table 10 The field test results of peak particle velocity under CO2 blasting.
Sequence no. | Basting center distance (m) | Horizontal radial direction PPV(cm/s) | Vertical direction PPV(cm/s) |
|---|---|---|---|
1 | 4 | 9.67 | 7.93 |
2 | 6 | 8.05 | 5.88 |
3 | 7 | 6.58 | 5.11 |
4 | 10 | 5.22 | 4.28 |
5 | 14 | 4.05 | 3.62 |
6 | 17 | 3.66 | 3.22 |
7 | 20 | 3.15 | 2.98 |
8 | 23 | 2.86 | 2.83 |
9 | 32 | 2.58 | 2.37 |
10 | 40 | 1.58 | 2.15 |