无底柱分段崩落法加大采场结构参数过渡分段矿石回收情况计算机仿真与预测

Increasing Structural Parameters of Sublevel Caving Mining Method and Computer Emulation and Forecast of Ore Recovery for Transition Sublevel

现用无底柱分段崩落法的矿山，加大分段高度和进路间距，必定要有一个或两个分段的进路位置不符合菱形布置原则，必然要引进矿石损失贫化指标的变化，该分段称之为过渡分段。本文介绍了利用计算机仿真技术研究了过渡分段的矿岩接触面的形态、矿岩移动规律及放矿方式、放矿步距等对过渡分段回收指标影响，预测了过渡分段的损失贫化指标。

Abstract The mines used presently sublevel caving mining method to increase sublevel height and sublevel drive interval necessarily make one or two sublevel drives fail to conform the lozenge disposition principle,thus leading to the variation of ore dilution and loss indexes,this sublevel is known as transition sublevel.In this paper,the influence of the contact surface shape between ore and rock,the ore-rock displacement regular and drawing-ore form,and drawingrore step on the transition sublevel are studied,the ore loss and dilution indexes are forecasted,and the technical measures and control method to reduce ore loss and dilution indexes at the transition sublevel are raised.