针对南芬露天矿高台阶爆区头排清渣大抵抗线、爆堆上部大块偏多的实际情况,采用混合装药、间隔装药、改变起爆顺序、逐孔爆破等综合技术措施,降低了头排清渣大抵抗线部位的根底率,提高了岩石的破碎程度,改善了爆破质量,降低了矿山的开采成本。 In view of the fact that the top row of blasting slag in the high-profile blasting area of ​​Nanfen open-pit mine is mostly deflected by resistance and the bulk of the upper part of the blasting pile is too large, the comprehensive technical measures such as mixing charge, interval charge, changing initiation sequence, Head row clear residue roughly resistance base area rate, improve the degree of rock fragmentation, improve the quality of blasting and reduce mining costs.