Deformation Mechanism and Surrounding Rock Control in High-Stress Soft Rock Roadway: A Case Study

Table 2

Rock material parameters.

Rock	Density (kg·m^−3)	Shear modulus (GPa)	Bulk modulus (GPa)	Cohesion (MPa)	Interfriction angle	Tensile strength (MPa)
Mudstone	2100	0.27	0.53	0.55	25	0.80
Shale	2600	3.3	5.10	2.00	37	2.00
Siltstone	2200	0.47	0.91	0.81	25	1.00
Medium sandstone	2550	0.60	1.00	0.82	32	1.10
Fine sandstone	2600	0.67	1.18	0.80	30	1.15
Coal	1650	0.19	0.42	0.57	24	0.65
Gritstone	2520	0.60	1.00	0.82	32	1.14