Numerical Simulation Test of AFR Mining Method

In Chap. 4, the comparative test study of numerical simulation between AFR mining method and traditional mining method was introduced for different types of engineering including shallow buried depth, deep buried depth, and fault structural areas. Different types of numerical calculation models and quantitative evaluation indicators for stress and deformation were established. In different numerical simulation experiments, the stress of the surrounding rock in different parts of the roadway, the stress in the mining area, and the deformation of the surrounding rock were compared and analyzed. The distribution characteristics of stress in the mining area and the evolution law of roadway stress were clarified. The influence of different parameters on the stability of AFR without mine pillars and the design basis for key parameters were elucidated.