Shock and Vibration

Research Article

Study on the Deformation Mechanism of Soft Rock Roadway under Blasting Disturbance in Baoguo Iron Mine

Calculation parameters of the blasting vibration velocity attenuation model.


Date	Time	Detonating position	Monitoring point number	Distance (m)	Maximum single detonating charge weight (kg)	Proportional distance (m·kg^1/3)	Resultant velocity (cm·s⁻¹)

2014.4.30	15:31:01	+35 m level 11# roadway	4	55.51	570	6.69	7.54
			5	66.66		8.04	6.38
			6	75.89		9.15	4.81

2014.5.1	15:30:05	+35 m level 10# roadway	4	64.15	570	7.74	4.35
			5	73.77		8.90	6.70
			6	81.34		9.81	5.72

2014.5.2	15:29:58	+35 m level 12# roadway	5	71.21	576	8.56	3.25
	15:29:58	+35 m level 12# roadway	6	82.07	576	9.86	2.53
	15:31:10	+50 m level 24# roadway	5	174.86	576	21.02	0.22
	15:31:10	+50 m level 24# roadway	6	180.09	576	21.64	0.22

2014.5.3	15:28:14	+35 m level 12# roadway	4	59.10	580	7.09	3.95
			5	71.22		8.54	3.88
			6	82.08		9.84	2.91
	15:32:23	+50 m level 24#roadway	4	175.02	430	23.19	1.01
	15:32:23	+50 m level 24#roadway	5	174.77	430	23.16	0.19

2014.5.4	15:30:58	+35 m level 10# roadway	5	68.09	520	8.47	3.82
	15:30:58	+35 m level 10# roadway	6	75.12	520	9.34	3.52
	15:31:43	+50 m level 24# roadway	4	175.40	556	21.33	0.04
	15:31:43	+50 m level 24# roadway	5	174.65	556	21.24	0.08

2014.5.5	15:30:11	+35 m level 11# roadway	4	69.11	545	8.46	6.05
	15:31:09	+50 m level 25# roadway	4	199.87	969	20.20	0.35
	15:31:09	+50 m level 25# roadway	5	211.35	969	21.36	0.41