Effect Of Open-Pit Blasting Vibrations on a Hanging-Wall Slope: A Case Study of the Beizhan Iron Mine in China

Table 2

The results of blast vibration monitoring.

Serial number	Maximum charge (kg)	Distance from the explosive center (m)	Horizontal radial		Horizontal tangent		Vertical		Combined vibration velocity (mm/s)
			Vibration velocity (mm/s)	Main frequency (Hz)	Vibration velocity (mm/s)	Main frequency (Hz)	Vibration velocity (mm/s)	Main frequency (Hz)
1#	480	62	27.49	27.466	35.24	29.297	38.45	26.855	58.96
2#	480	84	41.41	21.362	14.96	28.076	32.15	19.531	54.52
3#	480	92	31.52	62.046	35.28	53.711	3.93	69.289	47.47
4#	480	121	12.87	26.855	0.27	35.368	1.42	52.472	12.95
5#	415	52	24.75	35.753	31.28	41.384	32.76	31.952	51.62
6#	415	79	18.83	31.928	27.86	48.358	25.83	38.261	42.40
7#	415	81	13.87	73.216	16.23	63.893	18.68	83.428	28.37
8#	415	159	10.28	52.467	0.83	83.138	2.73	121.438	10.67
9#	356	55	28.27	29.357	21.63	52.348	30.14	39.271	46.65
10#	356	88	23.64	36.339	19.27	45,773	27.44	38.621	41.03
11#	356	136	11.84	24.414	0.23	37.348	1.83	25.472	11.98
12#	356	152	7.47	14.038	2.27	12.817	1.97	14.038	8.05