针对龙桥铁矿残矿滞留在采空区内的矿石和下盘三角矿柱的开采技术条件,研究提出了几个适合的残矿回收方案,并采用模糊综合评价方法,结合龙桥铁矿的实际生产情况,选用采充成本、采切比、矿块生产能力、损失率和贫化率等5个指标,构建了基于层次分析和模糊数学的数学模型,经分析运算优选出最佳方案为分段空场嗣后充填采矿法。 Aiming at the mining conditions of the ore retained in the gob and the chamfer of the lower triangle in Longqiao Iron Mine, several suitable recovery schemes for the residual mine are proposed and the fuzzy comprehensive evaluation method is used. Combined with the Longqiao Iron Mine The author chooses mathematical models of AHP and fuzzy mathematics based on the five factors of mining cost, mining and cutting ratio, ore block production capacity, loss rate and dilution rate. The optimal scheme Subsequent filling of mining law for staging empty space.