Comparative Study on Dynamic Mechanical Properties and Energy Dissipation of Rocks under Impact Loads

Table 1

Basic mechanical parameters of rocks.

Rock types	Density (g/cm^3)	P-wave velocity (m/s)	Wave impedance (g·cm^−3 m·s^−1)	Tensile strength (MPa)	Uniaxial compressive strength (MPa)	Elastic modulus (GPa)
Red sandstone	2.32	2702	6269	2.21	32	3.44
Gray sandstone	2.57	3907	10041	7.06	77	8.61
Granite	2.61	5278	13776	6.48	89	14.23