Research Article
Study on the Vibration Effect of Short Footage Blasting Load on Surrounding Rock-Support Structure of Tunnel
Table 3
Peak displacement at each measuring point of 3-3 profile (mm).
| | Blasting times | Arch bottom | Arch top | Left arch waist | Right arch waist |
| | 1 | 8.421 | 8.246 | 8.264 | 8.421 | | 2 | 10.354 | 9.973 | 9.634 | 9.653 | | 3 | 12.632 | 12.174 | 12.362 | 12.565 | | 4 | 22.842 | 22.352 | 22.532 | 22.532 | | 5 | 46.642 | 45.543 | 45.466 | 45.563 |
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