Optimum Selection of Mining Plans for Pillars Containing Interlayers Based on Numerical Simulation

Table 1

Strength parameters of the rock mass.

Lithology	Compressive strength (MPa)	Tensile strength (MPa)	Elastic modulus (GPa)	Poisson’s ratio	Cohesion (MPa)	Friction angle (°)	Density
							g/cm³
Marble	7.86	0.7	11.64	0.27	1.20	37	2.663
Skarn	11.89	1.5	15.29	0.30	1.10	30	3.086
Slate	17.02	0.9	18.81	0.21	1.50	39	2.770
Ore body	25.33	2.0	21.26	0.19	1.80	40	3.565