Numerical Investigation of Rockburst Effect of Shock Wave on Underground Roadway

Table 1

Mechanical parameters of rock strata.

Stratum	Thickness/m	Density/(Kg·m^−3)	Bulk modulus/GPa	Shear modulus/GPa	Cohesion/MPa	Friction angle/°	Tensile strength/MPa
Tinea mudstone	11.5	2640	8	4.8	2.3	35	5
Finestone/siltstone	3.2	2700	12	8.1	4.0	37	7
Mudstone	10.0	2640	8	4.8	2.3	35	5
11^−2 coal seam	1.2	1300	8.5	4	0.5	28	2
Mudstone	4.5	2640	8	4.8	2.3	35	5
11^−1 coal seam	0.8	1300	8.5	4	0.5	28	2
Mudstone	9.0	2640	8	4.8	2.3	35	5