关键词: 残矿回采, 采场顶板, 梁理论, 数值模拟, 稳定性分析

Abstract: Based on a residual ore mining project，a typical residual mining area is selected to establish structure models.The stability of stope roof was studied by using beam theory and FLAC^3D software，which combined with damage theory of permissible limits of displacement.Then，the stability of these models was comprehensively evaluated through finding the similarities and differences of the beam theory and the numerical simulation.At last，the research findings were verified by on-site tests.The research shows that the mining structure models of residue ores can basically reflect the actual situation that the residual ore mining operations are adjacent to goafs and breakout zone.And structure model Ⅰ and model Ⅱ are stable，but model Ⅲ is unstable，which means that the corresponding stoping scheme of model Ⅰ is feasible，the corresponding region of model Ⅱ is stable and the corresponding stoping scheme of model Ⅲ needs to make adjustments.Furthermore，there is no significant difference between beam theory′s and numerical simulation′s results，which is consistent with the results of on-site survey.Combination of both beam theory and numerical simulation can achieve good results.

Key words: Residual ore mining, Stope roof, Beam theory, Numerical simulation, Stability analysis