阶段嗣后充填采矿设计优化研究  

Study on Optimization Design of Stage Backfilling Method

作　　者：董璐[1,2] 高谦[1,2] 李茂辉[1,2] 王有团[1,2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083

出　　处：《矿业研究与开发》2014年第3期4-7,共4页Mining Research and Development

基　　金：国家重点基础研究发展计划(973)资助项目(2010CB731501);河北省钢铁产业技术升级专项资金资助项目(SJGS-KJ-12-03);长江学者和创新团队发展计划资助项目(IRT0950)

摘　　要：针对大型贫铁矿采用的上向阶段嗣后充填采矿方法,提出超大采场开采的点柱式结构型式,同时开展了3种回采模式阶段嗣后充填采矿的可行性论证与采场结构参数的优化研究。针对司家营铁矿南区的工程和水文地质条件和充填体的力学参数,采用FLAC3D数值分析软件,设计不同回采方案下的正交数值试验,建立了南区开采的优化模型,得到不同回采模式下的最佳采场结构参数。通过对采场稳定性评价,揭示了不同回采模式的优越性和不足,从而使采矿设计方案适用于复杂变化的矿山工程地质条件,为实现矿山安全高效开采打下了基础。According to the previous stage backfilling method used in the large and poor iron ore, point pillar structure for super stope was put forward. And feasibility demonstration and optimization study on stope structure parameters for 3 stage backfilling stoping models were carried out. Based on the engineering and hydrogeological conditions and mechanics parameters of the filling body in southern Sijiaying iron mine, orthogonal numerical tests under different stoping method were designed by FLAC3Dsoftware. Finally, the optimization model for mining in the southern area was established to receive the optimal stope structure parameters under different mining models. The stope stability evaluation revealed the advantages and disadvantages of different models, so then the mining design could apply to complex changes of engineering geological conditions in mines and provide foundation for safe and high-efficient mining.

关 键 词：阶段嗣后充填 点柱 采场结构参数 正交数值试验 

分 类 号：TD853.34[矿业工程—金属矿开采]