Simulation of the Uniaxial Mechanical Properties and Crack Evolution of Coal Pillar-Artificial Dam in Abandoned Mines

Table 4

Uniaxial compression energy value of coal pillar-artificial dam test piece.

Group	Total energy (J·m^−3)	Elastic energy (J·m^−3)	Dissipated energy (J·m^−3)	Percentage of elastic energy (%)
Dam	18.86	16.26	2.60	86.21
Coal	2.19	2.09	0.10	95.43
50°	17.72	16.76	0.96	94.58
60°	18.93	17.33	1.60	91.55
70°	22.70	20.0	2.62	88.11
80°	16.34	15.14	1.20	92.66
90°	17.44	16.47	0.97	94.44