Analysis of the Tunneling Blast Safety Criterion Based on Longitudinal Shocks

Table 1

The time interval of every multistage.

Stage 1 (ms)	Stage 2 (ms)	Stage 3 (ms)	Stage 4 (ms)	Stage 5 (ms)	Stage 6 (ms)	Stage 7 (ms)
0	50	100	200	310	460	650