Abstract:For accurate scope and level analysis of the impact on existing buildings/structures in the ground surface movement zone during cut-and-fill mining, a three-dimensional numerical model was built by integrating 3D Mine, Rhinoceros and FLAC3D Deformation was simulated by using factors of displacement, stress and plastic zone and stability analysis of surface buildings/structures was conducted combining safety indicators including horizontal strain, curvature and slope. As was indicated by analysis results, plastic failure zone, which was dominated by shear failure, was created around the stope by mining, but it did not reach the surrounding buildings/structures; After mining completion by rational sequence, all buildings/structures remained outside the mining disturbed zone, and all the safety analysis indicators were smaller than the critical deformation allowance. Therefore, it is considered that underground mining will not affect the safety of buildings/structures.
