Research Article
Hollow Effect of Ground Vibration Induced by Electronic Detonator in Shallow Tunnel
Table 5
Averages and standard deviations of
.
| Variable | Average value | Standard deviation |
| Z-axis | 1.278 | 0.223 | Z-axis | 1.776 | 0.574 | X-axis | 1.277 | 0.541 | Y-axis | 0.841 | 0.240 | Z-axis | 0.940 | 0.463 |
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