The Vibration Characteristics of Ground of Rock Blasting in Silt-Rock Strata

Table 7

Testing results of blasting vibration velocity.

Test times	The maximum charge of one section Q (kg)	Vibration velocity
		No. of measuring point	The distance from explosion source (m)	PPV υ (cm/s)
				The X direction	The Y direction	The Z direction	Resultant
No. 1	34.8	ZC1	30	1.67	1.32	1.93	1.94
		ZC2	60	0.37	0.39	0.49	0.54
		ZC3	90	0.18	0.17	0.33	0.34
		ZC4	130	0.15	0.13	0.1	0.2
		ZC5	170	0.04	0.06	0.09	0.1
No. 2	150	ZC1	30	4.68	3.2	8.1	8.58
		ZC2	60	6.97	3.87	4.22	7.6
		ZC3	90	0.46	0.47	0.97	1.01
		ZC4	120	1.11	1.14	0.81	1.36
		ZC5	150	0.34	0.39	0.62	0.63
		ZC6	180	0.34	0.14	0.48	0.49
No. 3	165.6	ZC1	30	4.95	3.1	15.3	15.36
		ZC2	60	2.37	1.75	8.05	8.25
		ZC3	90	1.22	0.84	2.09	2.09
		ZC4	120	0.73	0.36	0.83	0.87
		ZC5	150	0.01	0.017	0.0057	0.017
No. 4	54	ZC1	30	2.13	0.68	0.63	0.63
		ZC2	60	0.57	0.68	0.38	1.41
		ZC3	90	1.6	0.82	0.5	1.61
		ZC4	120	0.37	0.26	2.1	2.12
		ZC5	150	0.22	0.18	1.02	1.03
		ZC6	180	0.18	0.12	0.63	0.63