A Study of Blast Vibration Propagation Law under Negative Altitude Terrains

Table 7

Peak vertical vibration velocity magnification.

Measurement point	Altitude difference, (m)			ε
1	−4	0.749 7	0.536 7	0.396 97
2	−6	0.380 4	0.432 0	−0.119 38
3	−8	0.229 8	0.351 8	−0.346 91
4	−8.5	0.281 5	0.193 2	0.457 30
5	−12	0.149 3	0.175 0	−0.146 79