煤层赋存角度倾斜导致相应区域内排土场基底倾斜，造成内排土场稳定性降低易发生滑动。为了探究抗滑煤柱在露天矿倾斜基底排土场中的应用效果和作用机理，以某露天矿倾斜基底排土场为研究对象，对倾斜基底未留设抗滑煤柱和在坡脚处留设抗滑煤柱情况下的排土台阶分别作理论分析，基于极限平衡法分别推导出了2种情况下的边坡稳定性计算公式。以基底地层倾角及排土场排弃高度为变量进行研究，得到基底地层倾角α或排弃高度H与边坡稳定系数F_s均呈负相关反比例函数关系，基底地层倾角对边坡稳定性影响较大，排土场排弃高度对边坡稳定性影响较小。采用FLAC^3D软件结合强度折减法对排土场留设煤柱前后状态下进行数值模拟分析验证，与理论分析结果基本一致，得出在当前地质条件下留设宽10 m抗滑煤柱可提升稳定性5%，从理论上揭示了留设抗滑煤柱对排土场边坡稳定性的影响。最后对抗滑煤柱留设参数进行研究，以煤柱留设高度h及煤柱留设坡面角β为研究对象，得到抗滑煤柱的留设高度与稳定系数呈正比例二次函数关系，抗滑煤柱坡面角对稳定系数影响成反比且影响较小，为后续在排土场边坡设置抗滑煤柱的研究及通过留设抗滑煤柱提高边坡稳定性的措施提供参考。

The tilted angle of the coal seam leads to the tilted base of the discharge field in the corresponding area, causing the stability of the inner dump to be reduced and prone to sliding. In order to investigate the application effect and mechanism of anti-slip coal pillar in the tilted-base earth dumping site of open-pit mines, taking the tilted base earth discharge field of an open-pit mine in the research object, the theoretical analysis of the tilted base without anti-slip coal pillars and the discharge step under the condition of leaving anti-slip coal pillar at the foot of the slope are made respectively, and the calculation formula of slope stability in the two cases are derived based on the method of limiting equilibrium. Taking the angle of inclination of the basement stratum and the discharge height of the soil disposal site as the variables for research, it was obtained that the angle of inclination of the basement stratum α or the height of the soil disposal H and the slope stability coefficient Fs were negatively correlated with the inverse proportionality function, the angle of inclination of the basement stratum had a greater influence on the slope stability, and the height of the discharge height of the soil disposal site had a second greater influence on the stability of the slope. Numerical simulation analysis was carried out by FLAC^3D software adopting the strength reduction method before and after the coal columns were set up in the discharge field, which was basically consistent with the theoretical results, and concluded that setting up 10m anti-slip coal columns under the current geologic conditions can improve the stability by 5%, which theoretically reveals the influence of setting up anti-slip coal columns on the slope stability of the discharge field. Finally, the parameters of anti-slip coal pillar setting are studied, with the height of coal pillar setting h and slope angle of coal pillar setting β as the research object, the setting height of anti-slip coal pillar and the stability coefficient are in a positive quadratic function, and the slope angle of anti-slip coal pillar has an inverse effect on the stability coefficient and the effect is small, which will provide references for the subsequent research on the installation of anti-slip coal pillars on the side slope of the soil disposal site and the measures to improve the stability of side slopes through the setting of anti-slip coal pillars. The study will provide a reference for the subsequent research on the installation of anti-slip coal pillars and the measures to improve slope stability by leaving anti-slip pillars.