摘要
采用无底柱分段崩落法的矿山中，松散覆盖岩层的自然分级现象是造成损失贫化的因素之一。本文采用基于块体离散元法的计算机模拟技术，研究了覆盖岩层的移动过程、移动方向以及移动形式，建立了数学模型，开发了仿真软件RB—DEM。通过RB—DEM的模拟，证实了自然分级现象的存在，为降低矿石损失贫化提供了新途径。
The natural grade classification of loose-covered rock has a great effect on caving mining effi- ciency in the mines using sublevel caving without sill pillar. This paper adopts the computer simulation tech- nology on the basis of discrete element method, studies movement process, movement direction and move- ment pattern of rock block of covering rock, builds mathematical model and develops simulation software RB_ DEM. Through simulation of RB _ DEM, the existence of natural classification phenomenon is confirmed, it provides a new way for reducing the loss and dilution of ore.
出处
《中国矿业》
北大核心
2011年第4期97-100,共4页
China Mining Magazine
关键词
离散元法
覆盖岩层
自然分级
模拟
discrete element method
covering rock
natural grade
simulation
