Application of the Slope Coefficient of the Equivalent M–C Criterion in Layered Rock Mass Engineering

Table 2

Rock mass equivalent strength parameters under different dip angles .

Dip angles		3	4	5	6	7	8
0°		2.69	2.71	2.74	2.79	2.83	2.85
		41.3	36.87	33.09	30.00	27.52	25.40
30°		1.85	1.86	1.88	1.9	1.92	1.94
		35.20	30.33	26.74	23.89	21.65	19.76
45°		1.94	1.95	1.97	1.994	2.01	2.04
		37.59	32.68	29.08	26.17	23.76	21.78
60°		2.49	2.52	2.58	2.63	2.68	2.72
		36.00	31.13	27.52	24.65	22.33	20.43
90°		2.56	2.59	2.64	2.65	2.73	2.78
		42.84	38.17	34.10	31.33	28.68	26.55

Note: the cohesion unit in the table is MPa, and the internal friction angle unit is “°.”