某露天矿排土场下覆矿石采场扩帮设计

Design of Ore Stope Expansion Under the Dump of an Open-pit Mine

某露天矿南扩采场上方存在排土场,影响正常扩帮生产。针对此复杂工程条件,首先对上覆排土场削坡参数进行设计,后采用盈利法确定经济合理剥采比,以此为指标,对露天矿扩展部分进行设计。结果表明,开采终了采矿损失率和贫化率与矿山往期相当,而剥采比为11.98,小于经济合理剥采比,矿石资源回收经济合理。研究思路对具有类似工程条件的矿山设计提供了借鉴。

There is a dump above the south expansion stope of an open-pit mine,which affects the normal expansion and production.In view of this complex engineering condition,the slope cutting parameters of the overlying dump are designed first,and then the economical and reasonable stripping ratio is determined by the profit method,and the extension part of the open pit is designed based on this index.The results show that the mining loss rate and dilution rate at the end of mining are similar to those in the previous period of the mine,and the stripping ratio is 11.98,which is less than the economical and reasonable stripping ratio,and the recovery of ore resources is economical and reasonable.The research ideas provide reference for mine design with similar engineering conditions.