矿产保护与利用2025，Vol.45Issue(2)：77-83,7.DOI:10.13779/j.cnki.issn1001-0076.2025.08.003
阿舍勒铜矿矿柱回采降贫方案数值模拟研究
Numerical Simulation on the Poverty Reduction Scheme for Pillar Back Mining at the Ashele Copper Mine
摘要
Abstract
In order to solve the problem of high depletion rate of ore caused by destabilization and destruction of the filling body in the process of two-step back-mining pillars in the large-diameter deep-hole air-field subsequent filling mining method of Ashele Copper Mine,a solution of poverty reduction by adding supporting nets to the flanks before filling is proposed.Using FLAC3D numerical simulation software,numerical simulation was carried out for the-50 m～-100 m"Drill from one to the next"scenario of Ashele Copper Mine.The"Geogrid"module was used to construct mining steel-plastic mesh,mining plastic mesh and mining flexible mesh,which were added to the two wings of the filling body for numerical simulation.Comparing the numerical simulation results of the three types of support nets and the unsupported nets,the addition of the support nets effectively reduces the X-direction displacement of the filling body on both flanks of the extraction zone.Mining flexible mesh makes the displacement reduced by 24.1%;calculated the size of the plastic zone of the quarry in four cases,the plastic zone under the action of the supporting nets are reduced,and the flexible network has the most significant effect,reduced by 93.1%.The research results provide a theoretical basis for mines to solve the problem of filling body collapse during pillar mining.关键词
空场嗣后充填/柔性支护/降贫方案优选/FLAC3D数值模拟/阿舍勒铜矿Key words
backfilling of empty spaces/flexible support/optimization of poverty reduction schemes/numerical simulation/Ashele Copper Mine分类
矿山工程引用本文复制引用
郭志辉..阿舍勒铜矿矿柱回采降贫方案数值模拟研究[J].矿产保护与利用,2025,45(2):77-83,7.基金项目
国家自然科学基金项目(51804017) （51804017）
