A Comparative Study of Ground and Underground Vibrations Induced by Bench Blasting

Table 3

Vibration measurements taken on surface.

Blast	Bench	, maximum charge by delay (kg)	, distance (m)	PPV (mm/s)	Frequency (Hz)
1	628	350	35	104.9	15.3
		350	95	5.1	21.5
2	628	174	35	2.9	30.5
		174	65	51.3	33.5
3	628	174	35	59.5	32.9
		174	65	36.9	30.5
4	628	175	35	7.0	36.0
		175	65	38.7	25.0
5	628	174	105	13.7	31.5
6	628	175	35	69.3	34.2
		175	95	64.3	32.3
7	628	175	65	3.2	11.7
		175	155	5.6	4.9
8	628	175	97	23.8	16.5
		175	126	3.1	12.2
9	628	144	35	72.4	32.9
		144	65	4.0	31.7
10	628	132	35	72.4	17.7
		132	65	71.3	32.3
		132	95	68.0	20.1
11	628	192	35	72.4	17.7
		192	65	43.1	23.8
		192	95	30.7	32.3
12	628	132	35	71.1	17.1
		132	65	59.9	30.5
		132	95	4.9	31.7
13	628	144	35	90.5	33.6
		144	65	39.8	32.9
		144	95	29.9	31.7
14	628	192	35	92.5	38.4
		192	65	38.1	32.2
		192	95	5.4	29.2
15	628	192	35	21.7	18.3
		192	65	70.5	52.5
		192	92	71.8	50.7
16	628	168	35	72.4	36.0
		168	65	43.9	25.0