Research Article
Study on the Vibration Effect of Short Footage Blasting Load on Surrounding Rock-Support Structure of Tunnel
Table 6
Peak value of vibration velocity at each measuring point of profile 3-3 (10−2 m/sec).
| | Blasting times | Arch bottom | Arch top | Left arch waist | Right arch waist |
| | 1 | 6.360 | 4.347 | 5.348 | 4.350 | | 2 | 11.702 | 11.689 | 11.691 | 11.694 | | 3 | 14.989 | 14.965 | 14.966 | 14.955 | | 4 | 25.175 | 24.662 | 24.765 | 24.870 | | 5 | 34.352 | 33.761 | 33.891 | 34.784 |
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