随机介质放矿理论的改进研究  

Research on Improvement of the Stochastic Medium Theory for Ore Drawing

作　　者：陶干强[1] 任凤玉[2] 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 [2]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《采矿与安全工程学报》2010年第2期239-243,共5页Journal of Mining & Safety Engineering

基　　金：湖南省自然科学基金项目(07JJ3090)

摘　　要：在实验的基础上,分析了放矿口宽度对放出量和散体流动参数的影响,改进了随机介质放矿理论,揭示了放矿口宽度对散体移动规律的影响,并指出了其影响范围.将改进后的随机介质放矿理论与原来的随机介质放矿理论进行了对比,3个矿山实验结果表明,改进后的随机介质放矿理论与实际符合较好.提出了确定采场结构参数的新方法,当放出体为非标准椭球体时,上下分段菱形布置的放出体三点相切时可得到最优的采场结构参数.该方法的提出,进一步扩大了随机介质放矿理论的应用范围.Based on the experiments,the relationship among draw-point size,released volume,and granular flow parameters are analyzed.Then,the improved stochastic medium theory of drawing（ISMTD） considering the effect of draw-point size is put forward.ISMTD shows the relationship between granular flow rules and size of stoping drift in sublevel caving and indicates the influence scope of draw-point size.Then two methods,namely the stochastic medium theory of drawing（SMTD） and ISMTD,are compared by three experiments in three different mines.The experimental results show that ISMTD can well reflect flow characteristics of caved ore and rock.Moreover,new methods for determining the stope structure parameters are proposed.As the draw body is not a normal ellipsoid,the optimized stope structure parameters can be obtained by tangency of three draw bodies in diamond sublevels in three points.ISMTD not only enlarges the application field but also develops the stochastic medium theory of ore drawing.

关 键 词：无底柱分段崩落法 随机介质放矿理论 放出体形态 放矿口 放出体方程 

分 类 号：TD853.31[矿业工程—金属矿开采]