Research on Stability Control Technology of Mining Roadway Based on Energy Transformation

Table 1

Mechanical parameters of surrounding rock.

Rock formation	Bulk modulus/GPa	Shear modulus/GPa	Cohesion/MPa	Internal frictional angle/°	Tensile strength/MPa	Density/kg·m^-3
Medium sandstone	7.2	5.4	4.46	32	3.09	2568
Siltstone-fine sandstone interbedding	8.5	6.3	3.54	31	3.03	2640
93^# coal	5.3	3.1	2.36	28	1.68	1395
Midfine sandstone	10.3	7.8	3.25	32	2.62	2608
Medium sandstone	9.5	7.3	3.89	30	4.20	2568
Fine sandstone	9.8	6.2	4.02	32	2.89	2614