基于Bergmark-Roos方程的松散矿岩放矿理论研究  

Research of ore drawing method of broken ore and rock based on Bergmark-Roos equation

作　　者：陶干强[1] 杨仕教[1] 刘振东[1] 任青云[1] 

机构地区：[1]南华大学核资源与核燃料工程学院,湖南衡阳421001

出　　处：《煤炭学报》2010年第5期750-754,共5页Journal of China Coal Society

基　　金：湖南省自然科学基金资助项目(07JJ3090)

摘　　要：介绍了Bergmark-Roos方程的基本假设和基本原理,讨论了改进的Bergmark-Roos方程,该方程考虑了放矿口尺寸大小对散体移动规律的影响。从力学的观点建立了松散矿岩流动的数学模型,揭示了放矿椭球体的形成机理。将改进的Bergmark-Roos放矿理论与椭球体放矿理论进行了详细的对比。根据Bergmark-Roos放矿理论得到的相关系数超过0.9,说明该理论得到的放出体与实际基本相符。对比结果表明,该理论与椭球体放矿理论一样,具有较高的精度,可较好地反映崩落矿岩的流动特性。The Bergmark-Roos hypothesis was discussed and the derivation of the Bergmark-Roos equation was reviewed. Then a revised version of the equation was developed which accounts for a non-zero opening width. The flowing mathematical model for broken ore and rock loose was established by the point of mechanics view and the forming mechanism of ellipsoid shape of ore drawing was revealed. Moreover,two ore drawing methods,namely ODMBR and ore drawing method of ellipsoid（ODME）,were compared in detail. The coefficient of correlation deduced by ODMBR exceeds 0. 9 in three experiments. The experiments results indicate that the drawbody obtained by ODMBR matches well with those of actual situation. The contrast results indicate that ODMBR is provided with higher precision the same as ODME and ODMBR can reflect flow characteristics of broken ore and rock well.

关 键 词：Bergmark-Roos方程 放矿理论 放出体形态 放矿口 放出体方程 

分 类 号：TD853.3[矿业工程—金属矿开采]