Research Article
A Study of Blast Vibration Propagation Law under Negative Altitude Terrains
Table 6
Relative errors of the predicted velocities.
| Data collection | Measurement point | PPV, (cm·s−1) | Predicted velocity from Sadovsky’s formula, (cm/s) | Predicted velocity from the CRSRI formula, (cm/s) | Relative error of Sadovsky’s formula, (%) | Relative error of the CRSRI formula, (%) | | | |
| Group1 | 1 | 0.689 0 | 0.394 0 | 0.543 0 | 0.536 7 | 0.749 7 | 22.11 | 8.81 | 2 | 0.383 0 | 0.233 0 | 0.260 0 | 0.432 0 | 0.380 4 | 12.78 | 0.68 | 3 | 0.256 0 | 0.237 0 | 0.252 0 | 0.351 8 | 0.229 8 | 37.44 | 10.24 | 4 | 0.321 0 | 0.200 0 | 0.207 0 | 0.193 2 | 0.281 5 | 39.82 | 12.31 | 5 | 0.127 0 | 0.095 0 | 0.092 0 | 0.175 0 | 0.149 3 | 37.79 | 17.56 |
| Group 2 | 1 | 0.636 0 | 0.391 0 | 0.435 0 | 0.536 7 | 0.749 7 | 15.62 | 17.88 | 2 | 0.373 0 | 0.249 0 | 0.245 0 | 0.432 0 | 0.380 4 | 15.81 | 1.98 | 3 | 0.314 7 | 0.224 0 | 0.213 0 | 0.351 8 | 0.229 8 | 11.80 | 26.98 | 4 | 0.407 0 | 0.248 0 | 0.217 0 | 0.193 2 | 0.281 5 | 52.54 | 30.84 | 5 | 0.287 0 | 0.126 0 | 0.127 0 | 0.175 0 | 0.149 3 | 39.03 | 47.98 | Average error | 28.47 | 17.53 |
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