间隔装药爆破方法的试验研究与应用

Experimental study on interval loading blasting and its application

针对我国许多露天矿炸药消耗大、矿石成本高、爆破效果不十分理想的问题,以本钢南芬露天矿为对象,通过改善装药结构,进行气体间隔器在中深孔干孔的间隔试验应用和中深孔水孔的间隔实验研究。结果表明:间隔装药爆破法不仅可以提高爆破质量和铲装效率,还能降低炸药单耗,从而降低矿石生产成本,若采用中间间隔装药,效果会更好。该成果对其它类似矿山具有一定的参考价值和工程实践意义。

In view of some problems such as high detonator consumption, high ore cost and faulty blasting effect in the course of many open pits producing, taking Nanfeng Open-pit Mine as research object, the experiment of gas interval implement in middle deep hole dry bore is applied and the experiment of gas interval implement in middle deep hole water bore are carried out by improving loading structure. The results show that interval loading may not only improve blasting quality and shovel loading efficiency, but also reduce unit explosive consumption and ore production cost. Blasting effect will be much better if middle interval is adopted. The research has certain reference value and practical significance to other similar open pits.