针对深埋煤层沿空掘巷围岩变形大、难控制问题，以某矿深埋冲击倾向性煤层沿空掘巷窄煤柱留设为工程背景，采用理论分析、数值模拟和现场试验相结合的方法，基于极限平衡理论解算窄煤柱留设合理范围，构建不同窄煤柱宽度及巷道掘进宽度数值模型，分析窄煤柱及实体煤内垂直应力及弹性能密度的分布演化规律。理论计算得出，窄煤柱留设最小宽度为5.04 m、巷道掘进宽度为5.4、6.0 m时，煤柱最大宽度分别为6.8、6.2 m，表明窄煤柱宽度减小仍具有良好的承载能力且处于低应力、低能量水平，可有效避免巷道大变形，降低冲击危险性。

Aiming at the problem of large deformation of surrounding rock and difficulty of control gob-side entry driving in deep coal seam, taking the setting of narrow coal pillar in gob-side entry driving in deep-buried bump-prone coal seam as the engineering background, the reasonable range of narrow coal pillar width is calculated by combining theoretical analysis, numerical simulation and field test based on the limit equilibrium theory. The distribution and evolution of vertical stress and elastic energy density in narrow coal pillar and solid coal are analyzed by constructing numerical models of different narrow coal pillar widths and roadway driving widths. The results show that when the minimum width with narrow coal pillar is 5.04m and the width of roadway is 5.4m and 6.0m, the maximum width of coal pillar is 6.8m and 6.2m, respectively. The narrow coal pillar with reduced width still has a good bearing capacity and is subjected to low stress and low energy level, can effectively avoid large deformation of roadway and reduce the bump risk.