Study on the Vibration Effect of Short Footage Blasting Load on Surrounding Rock-Support Structure of Tunnel

Table 5

Peak value of vibration velocity at each measuring point of profile 1-1 (10⁻² m/sec).

Blasting times	Arch bottom	Arch top	Left arch waist	Right arch waist
1	13.034	12.422	12.624	12.524
2	27.952	25.452	26.857	26.732
3	29.654	28.765	28.354	28.968
4	29.877	29.745	28.976	29.983
5	32.745	32.657	31.345	31.987