Study on Mechanical Properties and Control Technology of Surrounding Rock in the Fracture Zone of a Roadway

Table 6

Physical and mechanical parameters of rock mass after reduction.

Name	Elastic modulus (GPa)	Poisson’s ratio	Cohesion (MPa)	Density (kg/m^3)	Internal friction angle (°)	Compressive strength (MPa)	Tensile strength (MPa)
Silty mudstone	0.222	0.14	0.468	2190	23.99	2.079	0.215
Sand-mudstone interlayer	0.539	0.09	1.019	2197	28.66	4.298	0.5635
Fine sandstone	3.707	0.23	12.345	2486	31.5	40.81	2.037