Abstract:In order to obtain the reasonable parameters of stope structure and realize safe and efficient mining with sublevel open stoping method in a certain mine, four groups of optimization schemes were designed by taking pillar thickness, chamber span and pillar width as variables in combination with the mine practice. The entropy coefficientt-ideal point method evaluation model was used to evaluate and select the best scheme, and FLAC3D was used to simulate the scheme. The results of comparative analysis show that the comprehensive evaluation system can optimize reasonable structural parameters and has practical significance for mine production.