GCRN评价模型在泥河铁矿采场结构参数优化中的应用  

Application of GCRN evaluation model in optimization of stope structure parameters for Nihe Iron Mine

作　　者：陈小强[1] 刘艳章[1] 邹晓甜 潘世华[1] 张群[1] 张丙涛[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081

出　　处：《化工矿物与加工》2016年第5期31-36,共6页Industrial Minerals & Processing

基　　金：国家自然科学基金面上项目(编号:51074115);国家科技支撑计划项目(编号:2011BAB05B03);湖北省自然科学基金重点项目(2015CFA142)

摘　　要：为确定泥河铁矿合理的采场结构参数,提出一种反映采场出矿波动的评价指标——矿块回采波动率,并选取安全系数、矿块回采波动率、大主应力、矿房顶板沉降量4个评价指标,利用所构建的GCRN(灰色关联相对贴近度)评价模型进行综合评价。结合泥河铁矿工程实际对不同采场结构参数的11个方案进行数值模拟,分析两种工况条件下采场围岩应力应变状态,将数值模拟分析结果应用于GCRN评价模型,利用计算所得的灰色关联相对贴近度进行方案优选,最终确定方案6为最优方案,其矿房和矿柱宽度均为20m。In order to ascertain the rational stope structure parameters for Nihe Iron Mine,an evaluation index-- block stoping fluctuation rate to reflect fluctuations in stope ore removal is proposed and 4indexes of safety factor,block stoping fluctuation rate,major principal stress and roof displacement are selected.Comprehensive evaluation is conducted using GCRN evaluation model.Numerical simulation of 11 schemes with different stope structural parameters is made taking Nihe Iron Mine as an example to analyze the surrounding rock stress and displacement of the stope in the two working conditions.The analysis of numerical simulation is conducted in GCRN evaluation model to optimize the schemes with GCRN by calculation and scheme 6is taken as the best one with width of chamber and pillar being both 20 m.

关 键 词：采场结构参数 矿块回采波动率 有限元 灰色关联相对贴近度 泥河铁矿 

分 类 号：TD853[矿业工程—金属矿开采]