Large-Deformation Failure Mechanism of Coal-Feeder Chamber and Construction of Wall-Mounted Coal Bunker in Underground Coal Mine with Soft, Swelling Floor Rocks

Table 3

Parameters of the supporting elements used in the numerical model.

Property	Bolt	Cable
Dimensions (mm)	Ø20 × L1	Ø17.8 × L2
Elastic modulus (GPa)	25	200
Yield strength (kN)	150	450
Stiffness of the grout (N/m^2)	2 × 10^7	2 × 10^8
Cohesive capacity of the grout (N/m)	10 × 10^5	10 × 10^5
Grouted length (mm)	0.5 L1	0.5 L2
Pretension force (kN)	60	120