Characteristics and Time-Space Evolution of Mining Stress in High Stope

Table 2

Mechanical parameters of Lilou Iron Mine-related rock masses.

Rock mass	Density (kg/m^3)	Elastic modulus (GPa)	Poisson’s ratio	Cohesion (MPa)	Friction angle (°)	Tensile strength (MPa)	Compressive strength (MPa)
Dolomite marble	2838	21.135	0.234	1.86	42.38	0.747	31.760
Quartz specularite	3487	25.119	0.202	3.72	41.76	2.765	45.924
Chlorite schist	2682	11.260	0.258	1.53	43.12	0.529	12.624
1 : 6 filling body	1740	0.45	0.25	0.43	40	0.20	2.71