Evaluation of Stope Stability and Displacement in a Subsidence Area Using 3Dmine–Rhino3D–FLAC3D Coupling

Underground stope stability has important implications for the safety and efficiency of metal mining, especially when there are subsidence zones above. To analyze around area Hongling ore body, this paper innovatively adopts 3Dmine–Rhino3D–FLAC3D coupled modeling numerical method to model predict excavation process area; it monitors analyzes displacement stress-distribution changes in a selected roof, its left-hand side right-hand walls. This realizes separation extraction special body surface topographic features body; discusses characteristics based on real topography mining occurrence form body. The study found that influence upper collapse undesired downhole is mainly reflected roof displacement. As position moves away from area, decreases significantly, maximum at center principal stress occurs corner stope.