Security pillar mining method

The invention discloses a security pillar mining method, which belongs to the technical field of mining, and mainly comprises the following steps: S1, analyzing the geology of a mining area; s2, mining area ore rocks are collected; s3, analyzing physical and mechanical parameters of ore rocks in the mining area; s4, carrying out mining area rock mass quality evaluation, and correcting mechanical parameters of rock mass in combination with rock mass quality evaluation; s5, performing three-dimensional modeling, and establishing a mining three-dimensional numerical model; s6, carrying out numerical calculation and analysis, specifically, combiing a three-dimensional numerical model with calculation simulation software and a basic model, and setting boundary conditions and initial conditionsto be used for simulating the stress and deformation conditions of the wellbore structure under the condition of security pillars of different sizes; and S7, determining the mining range of the shaftsecurity pillar, and obtai