The Influence Mechanism of the Master Weak Interlayer on Bench Blasting Effect and Its Evaluation Method

Table 3

Physical and mechanical properties of rock-soil used in the numerical simulation.

Lithology	Density, ρ (g/cm^3)	Cohesion, C (MPa)	Internal friction angle, φ (°)	Young’s modulus, E (GPa)	Dynamic tensile strength (MPa)	Wave impedance, 10^6 kg/(m^2·s)
Surrounding rock	2.5	10	40	13	12	5.65
Hard	2.0	9	39.0	11	10	5.24
Medium	1.5	1	38	7	6.4	3.87
Soft	1.0	0.36	35.0	2	3.3	1.88