Prediction of Bench Blasting Vibration on Slope and Safety Threshold of Blasting Vibration Velocity to Undercrossing Tunnel

Table 3

Monitoring data on the slope surface.

Blasting times	Horizontal distance (m)	Vertical distance (m)	Maximum charge per delay (kg)	PPV (cm/s)			PVS (cm/s)
				x	y	z
1	69	25	250	6.9	2.5	7.2	7.9
2	97	51	250	4.2	3	4.8	5.4
3	98	39	315	3.4	0.9	3.6	3.8
4	367	65	315	0.4	0.3	0.5	0.6
5	193	28	108	1.3	1.4	1.6	2.1
6	219	41	108	0.6	0.9	0.4	1.0
7	155	54	108	1.1	1.3	1.3	1.6
8	133	28	108	1.7	1.4	1.8	1.9
9	61	39	310	7.6	5.8	7.7	7.9
10	306	65	310	0.7	0.7	0.9	1.1