无底柱分段崩落法放矿步距优化数值模拟  

Numerical Simulation to Optimize the Drawing Pace of Sublevel Caving Without Sill Pillar

作　　者：李彬[1] 许梦国[1] 曹华斌[2] 李艳[1] 马俊[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 [2]武钢程潮铁矿,湖北鄂州市436051

出　　处：《矿业研究与开发》2012年第2期5-7,共3页Mining Research and Development

摘　　要：通过研究无底柱分段崩落法矿岩移动规律,比较分析影响矿石回收率的若干因素,指出优化放矿步距的重要性和有效性。结合程潮铁矿实际情况,应用PFC3D颗粒流软件,针对不同放矿步距参数,进行放矿数值模拟,并进行综合比较,得到现行采场结构参数下的最优放矿步距为3 m的结论。By studying displacing regular of caved ore-rock for sublevel caving without sill pillar,several factors which affect ore recovery are compared and analyzed.Also,the importance and effectiveness of optimizing drawing pace are expounded.Combined with the actual situation of Chengchao iron mine,particle flow code in 3-Demensions（PFC^3D） is used to the numerical simulation of ore drawing with different drawing paces.The results of numerical simulation are compared significantly,and the conclusion is that under existing structural parameters of stope the optimal drawing pace should be 3 m.

关 键 词：无底柱分段崩落法 放矿步距 PFC3D 数值模拟 

分 类 号：TD853.362[矿业工程—金属矿开采]