Blasting Vibration Characteristics Calculation Formula considering Cylindrical Charge Delay Time

Table 2

Characteristic parameters of sandstone.

Medium	(MPa)	(MPa)	(GPa)		(kPa)	(kg/m^3)	C (m/s)
Sandstone	21.1	1.7	5.75	0.53	70	2400	1100

Note. is the compressive strength, is the tensile strength, is Lame’s coefficients, is the internal friction coefficient, is the cohesion, is the density of the medium, and C is the speed of elastic waves in media.