Numerical Tests Research on Mechanical Parameters of Rockmass considering Structural Plane Combination Characteristics

Table 1

Fracture stress values of rockmass with structure planes of different dip angles.

Confining pressure (MPa)	Fracture stress values (MPa)
	0°	15°	30°	45°	60°	75°	90°
1.5	32.0	30.7	28.4	6.57	6.0	21.6	31.4
2.5	40.7	39.3	36.5	10.4	9.4	29.7	40.4
3.5	49.4	47.8	44.5	14.3	12.7	36.7	50.5
6.0	71.7	69.6	65.1	24.1	22.3	53.0	74.7
Cohesion (MPa)	3.14	3.01	2.82	0.17	0.09	2.28	2.67
Internal friction angle (°)	52.80	52.43	51.41	36.29	34.64	48.33	54.35