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

Table 1

Mechanical parameters of rock strata.

Lithology	Elasticity modulus (GPa)	Poisson’s ratio	Cohesion (MPa)	Internal friction angel (°)	Tensile strength (MPa)
K2 limestone (natural state)	24.6	0.18	23.5	41	13.8
K2 limestone (water-saturated state)	22.6	0.20	22.4	38	9.4
Coal (natural state)	3.26	0.28	6.3	28	2.7
Coal (water-saturated state)	2.83	0.3	5.3	27	2.1
Mudstone (natural state)	4.94	0.29	7.2	32	3.7
Mudstone (water-saturated state)	2.56	0.32	5.1	30	1.5