Influence of In-Situ Stress on the Energy Transmission of Blasting Stress Wave in Jointed Rock Mass

Table 1

Physical and mechanical parameters of similar materials and prototype of intact rock.

Parameters	Prototype	Similar material
Uniaxial compressive strength Rc (MPa)	120	5.864
Tensile strength σt (MPa)	12	0.613
Elastic modulus E (GPa)	50	5.226
Internal friction angle φ (°)	30	23.2
Cohesion c (MPa)	30	1.49
Poisson ratio μ	0.223	0.203
Density ρ (kg/m^3)	2600	1980