Research Article
Safety Threshold Determination for Blasting Vibration of the Lining in Existing Tunnels under Adjacent Tunnel Blasting
Table 7
Monitoring data of blast vibration for a typical section.
| | Simulated condition | Position | PPV of on-site monitoring (cm/s) | PPV of numerical simulation (cm/s) | Error (%) |
| | III-grade rock mass | YK47 + 725 | 10.3 | 10.7 | 3.88 | | IV-grade rock mass | YK47 + 790 | 2.5 | 2.66 | 6.4 | | V-grade rock mass | ZK46 + 700 | 1.9 | 2.01 | 5.79 |
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