Comprehensive Experimental Study of Affecting Factors on Rectangular Roadway Stability

Table 1

The mechanical parameters of model.

Lithology	Bulk modulus (GPa)	Shear modulus (GPa)	Strength of extension (MPa)	Cohesion (MPa)	Internal friction angle (°)
Medium sandstone	10.6	7.27	2.43	2.05	33
Fine sandstone	14.5	5.95	2.13	2.45	36
Mudstone	4.58	2.59	0.75	0.84	30
Sandy mudstone	4.17	2.27	1.15	1.07	32
Coal seam	4.03	1.65	0.54	0.95	31