【摘要】 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。本文针对石人沟铁矿露天转地下的实际情况,采用不同的计算分析方法,对具有代表性的断面进行了分析计算,为矿山设计提出的境界矿柱厚度确定的方法进行了验证和补充,同时也为矿山设计施工提供依据和指导。更多还原

【Abstract】 Thickness of pillar under open - pit bottom in mining shifting from open pit to underground is very important for safe production of underground mining. On the practice of Shirengou mining, the pillar thickness at representative sections is calculated and analyzed by using different methods. Pillar deformation and failure situations are caculated during caving. It validates the designed pillar thickness.更多还原