Optimization of Support and Relief Parameters for Deep-Buried Metal Mine Roadways

Table 2

Mechanical parameter of granite.

Confining pressure (MPa)	Peak stress (MPa)	Elastic modulus (GPa)	Poisson’s ratio	Cohesion (MPa)	Internal friction angle (°)
10	162.20	44.629	0.23	12.428	47.749
20	216.57	47.776	0.26
30	296.17	48.066	0.29
40	325.51	49.637	0.32