Analysis of Acoustic Wave Frequency Spectrum Characters of Rock Mass under Blasting Damage Based on the HHT Method

Table 1

Parameters of Blastmate-III blast vibration monitoring instrument.

Measuring range (mm/s)	Resolution (mm/s)	Precision (mm/s)	Maximum cable length (m)	Sampling rate (Hz)	Recording duration(s)
254	0.127	0.5	75	1024, 2048, 4096	1∼100