Experiment and Numerical Simulation of Strength and Stress Distribution Behaviors of Anchored Rock Mass in a Roadway

Due to the influence of ground stress, mining disturbance, and other factors, roadway surrounding rock in deep underground engineering such as mines, tunnels, caverns is prone looseness deformation with excavation roadways. In engineering, bolt support frequently employed stabilize rock. this work, a part anchor were taken simplified model anchorage mass, laboratory compression test was performed on similitude model. Then, FLAC3D software used simulate varying numbers bolts different lateral pressure conditions, peak maximum principal stress field, field distribution mass obtained. The pretightening force row spacing stability discussed using combined arch theory. results show that increasing number can significantly improve value range field. fluctuation at distances be lessened by (bolt density). When exceeds 3 MPa, mechanical characteristics tend remain stable. coverage effective thickness composite increased decreasing spacing, consequently improving mass. research theoretical reference for choosing appropriate parameters