Investigation on Damage Characteristic and Constitutive Model of Deep Sandstone under Coupled High Temperature and Impact Loads

Table 1

The physical and static mechanical parameters of deep sandstone.

Density (g/cm^3)	Porosity	P-wave velocity (m/s)	Compressive strength (MPa)	Tensile strength (MPa)
2.12	1.58%	3982	89.1	11.3