Analysis of Failure Characteristics and Strength Criterion of Coal-Rock Combined Body with Different Height Ratios

Table 4

GH-B criterion fitting parameters and R².

	R^2	m	b	n
0	0.9144	7.09	0.927	0.51
0.75	0.9095	1.52	0.81	0.521
0.67	0.9803	2.465	0.82	0.525
0.5	0.912	2.741	0.833	0.524
0.33	0.924	3.674	0.88	0.541
1	0.8803	1.1	0.88	0.53