Simulation of the Effect of Coal Microstructures on the Macroscopic Mechanical Behavior

Table 3

Data of the triaxial compression simulation on coal.

Compressing pressure (MPa)	Number	Peak strength (MPa)	Residual strength (MPa)	Elastic modulus (GPa)	Peak strain (%)	Postpeak modulus (GPa)	B1
0.5	A1	6.78	4.51	4.336	0.262	−1.262	2.56
	A2	7.04	4.96	4.537	0.263	−1.135	2.68
	A3	7.35	5.46	4.772	0.265	−0.967	2.89
1.0	A1	8.19	6.45	4.339	0.295	−1.031	2.70
	A2	8.45	6.92	4.535	0.293	−0.881	2.88
	A3	8.76	7.42	4.776	0.292	−0.738	3.09
1.5	A1	9.56	8.25	4.336	0.321	−0.793	2.96
	A2	9.82	8.72	4.526	0.318	−0.681	3.08
	A3	10.12	9.25	4.768	0.316	−0.551	3.18
2.0	A1	10.89	9.96	4.340	0.345	−0.563	3.34
	A2	11.15	10.39	4.541	0.342	−0.467	3.41
	A3	11.44	10.93	4.762	0.339	−0.342	3.48

¹B1: brittleness indices.