Abstract:The exploration and stability evaluation of underground goaf is one of the urgent safety problems to be solved in many mines. Taking a tourist adit as an engineering case, the BLSF mobile three-dimensional laser scanning measurement system was used to detect the goaf and build the three-dimensional point cloud model of the adit and goaf. Based on this, a refined three-dimensional numerical analysis model was established to evaluate the goaf stability based on the real form. The results show that the refined numerical simulation method based on three-dimensional laser scanning can more accurately depict the goaf morphology and more truly reflect the goaf stability characteristics. The isolated pillar of typical engineering has good stability, but there are potential safety hazards in local areas of the adit. The research results provide a useful reference for the safety evaluation of goaf stability in similar mines.