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

Table 2

Peak displacement at each measuring point of 1-1 profile (mm).

Blasting times	Arch bottom	Arch top	Left arch waist	Right arch waist
1	25.642	23.234	23.342	23.765
2	40.745	40.244	40.534	40.875
3	40.735	40.243	40.654	40.896
4	40.957	40.355	40.647	40.978
5	43.852	42.534	42.524	42.632