Research on Deformation Characteristics and Control Technology of Soft Rock Roadway under Dynamic Disturbance

Table 1

Physical and mechanical parameters of rock specimens from the Yineng coal mine.

Lithology	Compressive strength (MPa)	Tensile strength (MPa)	Elastic modulus (GPa)	Poisson’s ratio	Density (g/cm^3)	Cohesion (MPa)	Internal friction (°)
Packsand	34.3	4.37	8.21	0.17	2.72	3.56	30
Medium sandstone	26.5	3.31	6.37	0.1	2.69	3.65	30
Coal	7.25	0.79	0.6	0.24	1.35	0.84	42
Mudstone	12.5	1.62	3.14	0.21	2.45	1.81	32
Siltstone	30.6	3.76	7.32	0.19	2.71	2.71	32