论文部分内容阅读
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。
In view of the up-stage post-filling mining method used in large-scale poor iron mines, the point-column structure type of extra-large stope mining is proposed and the feasibility study and subsequent optimization of stope structure parameters for the subsequent filling of three mining modes are carried out . According to the engineering and hydrogeological conditions and the mechanical parameters of the filling body in the south of the Sijiaying Iron Mine, the numerical simulation software FLAC3D was used to design the orthogonal numerical test under different mining schemes and the optimization model of the mining in the southern area was established. Mode of the best stope structure parameters. Through the stability evaluation of stope, the advantages and disadvantages of different recovery modes are revealed, so that the mining design scheme can be applied to the complex and varied mine engineering geological conditions, laying a foundation for the safe and efficient mining.