Energy Accumulation and Dissipation of Coal with Preopening under Uniaxial Loading

Table 1

Comparison of laboratory test and numerical simulation results.

	USC/MPa		E (GPa)	c (MPa)	(deg.)
Experimental	28.1	0.23	8.15	9.56	24.41
Numerical	26.4	0.215	7.35	8.89	19.76
Error (%)	6.04%	6.51	9.81	7.01	19.04