Abstract:Taking a copper-tin mine in Yunnan Province as an example, the roadway support is simulated by using FLAC3D simulation and the parameters of roadway support are analyzed by orthogonal experimental design. Then, based on the analysis of suspension theory and reinforcement arch theory, Good bolt support parameters. The research results show that, while meeting the requirements of roadway stability, it is also necessary to choose an economically feasible bolt supporting parameter: when the bolt length is 2.1m, the spacing is 0.8m and the row spacing is 1.0m, the surrounding rock mass is stable , And compared to the previous support mode in the economy and efficiency have greatly improved.