工程科学学报2016，Vol.38Issue(11)：1509-1514,6.DOI:10.13374/j.issn2095-9389.2016.11.001
基于离散元理论的自然崩落法放矿细颗粒渗移过程研究
Discrete element method study on the percolation process of fine particles in ore drawing by the block caving method
摘要
Abstract
To explore the percolation regulation and inducement of waste fine particles in ore drawing by the block caving method, a simulation is undertaken by using discrete element method software EDEM. This simulation contains coarse-to-fine particle amount ratio, diameter ratio and moisture content, and sets marker particles in different regions to trace the migration of adjacent coarse and fine particles. The results indicate that the ore-drawing advance dilution rate decreases with increasing coarse-to-fine particle amount ratio. The percolation rate of waste fine particles increases with increasing diameter ratio and is significantly affected by moisture content. Moreover, the percolation rate of fine particles is greater than the decline rate of adjacent coarse particles. The results provide a theoretical support for further studying and discussing the ore loss and dilution, determining the stope structure parameters and opti-mizing the ore drawing management system.关键词
自然崩落法/细颗粒/渗透/含水率/离散元法Key words
block caving method/fine particles/percolation/moisture content/discrete element method分类
矿业与冶金引用本文复制引用
李涛,吴爱祥,韩斌,FENG Yun-tian,孙伟..基于离散元理论的自然崩落法放矿细颗粒渗移过程研究[J].工程科学学报,2016,38(11):1509-1514,6.基金项目
“十二五”国家科技支撑计划资助项目(2012BAB08B02,2013BAB02B05) （2012BAB08B02,2013BAB02B05）
