Experimental Study on Frequency Modulation Damping Effect of Digital Detonator in Road Clearance Blasting

Table 3

Statistics of vibration monitoring data for digital electronic detonator initiation system.

Measurement points	Direction	Peak vibration velocity (cm/s)	FFT frequency (Hz)	Maximum time (s)	Strike (cm/s)	Sensor number
#1	X	0.3772	53.0	0.0433	0.017	EMI53924
	Y	0.2673	55.3	0.4446	0.017	151325.BST
	Z	0.3051	50.0	0.2858	0.017
#2	X	0.3145	47.6	0.0865	0.017	EMI53925
	Y	0.3132	50.7	0.0845	0.017	082031.BST
	Z	0.3876	50.2	0.0877	0.017
#3	X	0.1723	50.7	0.0454	0.017	EMI53928
	Y	0.2016	42.3	0.0332	0.017	151325.BST
	Z	0.3432	50.2	0.1897	0.017
#4	X	0.1656	36.6	0.2954	0.017	EMI53927
	Y	0.0754	41.6	0.3077	0.017	151137.BST
	Z	0.1331	36.6	0.2643	0.017
#5	X	0.1107	36.9	0.3336	0.017	EMI53926
	Y	0.1973	26.9	0.2847	0.017	175006.BST
	Z	0.1813	39.2	0.2899	0.017
#6	X	0.1166	33.6	0.4670	0.017	EMI53923
	Y	0.1262	33.7	0.3445	0.017	112505.BST
	Z	0.2294	32.1	0.4753	0.017