Stability Evaluation of the Goaf Based on Combination Weighting and Cloud Model

Table 13

Macroscopic physical and mechanical parameters of the ore body in the Duimenshan section.

Petrography character	ρ (g/cm^3)	Strength of extension (MPa)	Modulus of elasticity (GPa)	Cohesive force (MPa)	φ (degree)	Poisson’s ratio
Siltstone	2.62	0.38	3.55	0.33	33.81	0.24
Dolomite	2.79	0.90	6.87	0.80	35.65	0.19
Limestone	2.64	0.86	6.76	0.77	37.03	0.19
Ore body	2.84	1.11	10.33	1.08	35.97	0.21