The study on bolt support reinforcement mechanism to jointed rock tunnels with numerical simulation

The paper analyzes the reinforcement mechanism of jointed rock mass roadway in metal mine by means of numerical simulation analysis,study the variation of the rock structure stress field and displacement field before and after the bolt support,with these we can determine the reinforcing effect of anchors.Simulation results show that Bolt reinforced support greatly enhanced the carrying capacity of joints surrounding rock,improve the force conditions of the surrounding rock,limit the deformation of the surrounding rock with roadway rock.All of these provide theoretical support for Bolt support in jointed rock mass.