Comparative Analysis of Roadway Reinforcement Effects Based on Fluid-Solid Coupling in the Fractured Zone of Water-Rich Fault

Table 4

Mechanical parameters of each rock stratum in numerical calculation.

Lithology	Elasticity modulus (GPa)	Poisson’s ratio	Cohesion (MPa)	Internal friction angel (°)	Tensile strength (MPa)
K2 limestone	3.1	0.2	2.56	32	1.7
Coal	1.1	0.31	1.26	25	0.9
Mudstone	1.65	0.32	1.44	29	1.2
Fault fracture zone	0.85	0.32	1.02	26	0.85