Table 11 The CO2 blasting numerical simulation results under the flat terrain.
Tube model number | Peak pressure of CO2 blasting P1 (MPa) | Basting center distance (m) | Horizontal radial direction PPV(cm/s) | Vertical direction PPV(cm/s) |
|---|---|---|---|---|
100# | 225 | 3 | 10.32 | 7.18 |
100# | 225 | 5 | 8.81 | 6.33 |
100# | 225 | 7 | 7.45 | 5.72 |
100# | 225 | 10 | 5.64 | 4.67 |
100# | 225 | 12.5 | 4.43 | 3.96 |
100# | 225 | 15 | 4.05 | 3.58 |
100# | 225 | 17.5 | 3.75 | 3.15 |
100# | 225 | 20 | 3.58 | 2.78 |
100# | 225 | 25 | 3.09 | 2.53 |
100# | 225 | 30 | 2.35 | 2.43 |
100# | 225 | 45 | 1.05 | 2.13 |
