井下爆破浸出筑堆效果的评价准则探讨

Discussion on evaluation criteria for constracted heap effect in different stope leaching operations

以<150 mm块度的产率大于75%为评价准则,评价井下原地爆破浸出筑堆的效果,到目前为止所有的铀矿井下原地爆破无一例外都获得成功。但哪次最好,尚难结论。按照d75%(即75%的矿石颗粒通过的筛径)作为评价准则,可分优劣,有益于对各次筑堆效果作出评价。

If yield（＆gt;75%） of ＆lt;150mm ore partical size is used as evaluation criteria of constructed heap effect in stope leaching operations,all stope leaching operations are successful.But,which is the best？ We do not know.A new evaluation method is proposed,that is using d75%（screen size of 75% ore passing） as evaluation criteria.The effect of constructed heap in different stope leaching operations can be evaluated by this method,and we can know which of these operations is the best.