Table 10 Amplitude ratio statistics in 0–100 Hz frequency domain (%).
From: Attenuation model of tunnel blast vibration velocity based on the influence of free surface
Serial no | Full section model | Upper step model | Lower step model |
|---|---|---|---|
9 | – | 39.34 | – |
10 | – | 50.05 | – |
1 | 33.24 | 49.26 | 39.87 |
2 | 44.12 | 49.27 | 47.07 |
3 | 50.61 | 49.11 | 47.92 |
4 | 57.32 | 49.17 | 54.70 |
5 | 64.59 | 52.40 | 58.57 |
6 | 64.45 | 56.60 | 62.48 |
7 | 68.64 | 59.87 | 61.14 |
8 | 70.57 | 64.78 | 60.55 |
