Modeling and Simulation of Deformation Mechanism of Soft Rock Roadway considering the Mine Water

Table 3

Coal and rock mass mechanical parameters.

Strata	Bulk modulus (GPa)	Shear modulus (GPa)	Frictional angle (°)	Cohesion (MPa)	Tensile strength (MPa)	Unit weight (kg·m^-3)
Siltstone	0.74	0.49	28	2.1	1.6	2550
Pack sand	1.04	0.56	32	2.3	1.0	2540
Coal seam	0.25	0.12	17	1.2	0.6	1370
Sandy mudstone	0.56	0.35	24	1.5	0.4	2200