断层影响下境界矿柱稳定性数值分析

露天转地下开采的矿山，其露天坑底境界矿柱厚度的确定，对于金属矿山地下开采安全生产极其重要。针对石人沟铁矿露天转地下设计资料和地质资料，运用RFPA进行建模，研究了地下开采对露天境界顶柱受力和变形情况，分析了境界顶柱的稳定性，为矿山设计提出的境界顶柱厚度进行了验证和补充，同时也为矿山设计施工提供依据和指导。

Instability Numerical Analysis of Boundary Pillar Affected by Fault

The determination of the thickness of boundary pillar under open-pit bottom is extremely important for the safe production of underground mining of metallic mines that have shifted from open-pit to underground. Based on the design and geological data of shirengou Iron Mine's shifting from open-casting to underground mining, model was established using RFPA to study the stress and deformation of open-pit boundary pillars during underground excavation and analyse their stability, verifying and complementing the designed pillar thickness and providing the basis and guidance for mine design and construction.