Analysis of the Influence of Fault Fracture Zone on Mining Response Based on FDM-DEM Coupling

Table 1

Physical and mechanical parameters used in the model.

Name of coal and rock mass	Bulk modulus (GPa)	Shear modulus (GPa)	Density (kg/m^3)	Cohesion (MPa)	Internal friction angle (°)
Clay rock	8.2	1.1	2500	1.8	30
Fine siltstone	9.6	3.6	2500	2.5	31
Fine sandstone	23.0	15.2	2700	17.0	38
Coal	1.5	0.8	1420	1.1	25
Grit stone	16.5	7.8	2620	5.0	29
Medium sandstone	19.4	13.2	2700	12.8	40
Siltstone	13.1	4.2	2500	3.0	33
Fault zone	0.5	0.5	2200	0.03	20