Simulation and Experimental Study on the Discontinuous Dynamic Impact on Unidirectional Confined Coal-Rock Damage

Table 2

Mechanical parameters used in the calculation.

Density kg/m³	Elastic modulus GPa	Compressive strength MPa	Poisson’s ratio	Damage factor D1	Damage factor D2
1428	0.81	5.6	0.3	0.04	1