Numerical Simulation of Bolt and Cable Supporting Stability for Large Deformation Roadway

In this paper, taking mining roadway as research background, through bolt and surrounding rock (coal) coordination mechanism, numerical simulation study was carried out for support in the forms of bolt + short bolt matching support and short bolt +anchor cable combined support. The results show that the bolt has good mechanical properties, and the elongation can reach 17%. Compared with the anchor cable, the project has a greater elongation. This feature of anchor ensures that it can provide appropriate supporting force, and the long and short support form has an broader and effective support area to allow maximum deformation range of the surrounding rock.