Analytical Solution for the Deformation and Support Parameters of Coal Roadway in Layered Roof Strata

Table 2

Mechanical parameters of coal and rock.

Lithology	(GPa)	(kN/m^3)	(GN/m^2)	(MPa)	(MPa)	(°)
Medium sandstone	18.96	27.18	——	5.37	62.3	37.3
Fine sandstone	11.1	26.79	——	3.01	50.6	35.2
Siltstone	10.08	26.13	——	2.97	50.2	33.3
Sandy mudstone	10.59	26.23	——	2.57	26.65	32.1
Coal	1.29	14.60	0.06	0.57	5.3	30.1