Study on Energy Distribution Law and Numerical Simulation of Mining Roadway Surrounding Rock

Table 2

Mechanical parameters of bolt (anchor cable) anchorage.

Supporting artifacts	Diameter (mm)	Length (mm)	Elasticity modulus (GPa)	Tensile strength (MPa)	Pretightening force (kN)
Anchor cables	21.6	10000	200	200	60
Bolts	22	2500	190	250	80