Deformation Mechanism and Support Technology of Deep and High-Stress Soft Rock Roadway

Table 1

The physical and mechanical properties of rocks.

Lithology	UCS (MPa)	Strength of extension (MPa)	Cohesion (MPa)	Internal friction angle (degree)	Elasticity modulus (MPa)	Poisson’s ratio
Sandstone	42.1	3.2	2.8	35.5	23000	0.29
Argillaceous sandstone	36.7	2.8	2.1	31	18000	0.26
Sandy mudstone	29.5	2.2	1.6	27.5	8500	0.23
Mudstone	21.2	1.0	0.6	20	6500	0.20