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

Table 3

Derived results by applying the Fourier transform.

MP	Distance to explotion center (m)	PVV (mm/s)			MVF (Hz)
		Tangential	Vertical	Radial	Tangential	Vertical	Radial
1	40.4	23.7	45.6	17.9	30.0	98.8	2.0
2	43.4	35.3	38.0	26.5	53.3	178	2.0
3	49.8	12.1	24.3	26.9	53.3	53.8	49.5