Failure Mechanism of a Coal-Rock Combined Body with Inclinations of Structural Planes and a Calculation Model for Impact Energy

Table 5

Predicted strengths and measured strengths of CR combined specimens.

Serial number of specimens	Predicted strength (MPa)	Measured strength (MPa)	Relative error (%)	Serial number of specimens	Predicted strength (MPa)	Measured strength (MPa)	Relative error (%)
CR-0-1	33.56	32.1103	−4.21	CR-30-1	18.07	17.3016	−4.94
CR-0-2		33.1421	−1.13	CR-30-2		19.3541	6.34
CR-0-3		35.3115	5.34	CR-30-3		17.9453	−1.4
Mean		33.5213		Mean		18.2003
CR-15-1	26.69	25.9652	−2.91	CR-45-1	13.16	12.5735	−3.69
CR-15-2		28.2658	5.69	CR-45-2		13.6984	4.92
CR-15-3		26.0026	−2.77	CR-45-3		12.8954	−1.23
Mean		26.7445		Mean		13.0558