南非帕拉波那(Palabora)矿应用双台阶和光面爆破技术,使现有露天矿变为安全陡坡露天矿,整个露天矿最终边坡角为46度,由于最终边坡角优化而获得的长期经济效益是巨大的。形成现在最终边坡的过程,是九年来控制露天矿周边爆破的最后结果,该矿最早用预裂 Using double steps and smooth blasting techniques at the Palabora mine in South Africa, the existing open pit mine was turned into a safe steep open pit mine with a final slope angle of 46 degrees for the entire open pit resulting from long-term optimization of the final slope angle Economic benefits are enormous. The process of forming the final slope now is the final result of controlling the blasting around open-pit mines in the past nine years. The earliest use of pre-cracking