Experimental Study on Deformation Law of Rectangular Roadway in Horizontal Layered Rock Mass

Table 1

Mechanical parameters of the prototype rock mas.

Rock types	Unite weight (kN/m^3)	Compressive strength (MPa)	Tensile strength (MPa)	Elastic modulus (GPa)	Poisson ratio	Friction angle (°)
Diabase	28.47	102.74	8.72	20.24	0.32	57
Green mudstone	27.45	46.96	4.57	16.82	0.18	54
Coal	18.29	14.82	0.37	7.20	0.21	48