Sensitivity Analysis of Anchor Reinforcement Support Parameters on Roof Stability of Coal Roadway

Sensitivity analysis of anchor reinforcement support parameters on roof stability of coal roadway with discrete element analysis software UDEC4.0 is carried out. Orthogonal test shows that spacing between anchors is the first impact factor on roof stability, the impact is most significant; anchor diameter takes second place, and the impact is more significant; anchor preload force, anchor length, length of anchoring section follows subsequently, and the impact is not particularly significant. In practical engineering applications, cable support parameters should be focused on roof stability in ensuring the stability of the roof, saving material and speeding up construction.