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针对高台阶靠帮预裂爆破出现根底的问题,进行了室内模型实验与现场生产实践,提出了预裂减震爆破的概念,并初步阐明了其作用机理。在本溪钢铁公司南芬露天矿的应用中,降震率达到了68.28%。这一研究为改进传统靠帮爆破技术提供了有效的途径。
In order to solve the problem that the pre-splitting blasting occurs in the high steps, the interior model experiment and field production practice are carried out. The concept of pre-cracking damping blasting is put forward, and the mechanism of action is preliminarily clarified. In the Benxi Iron and Steel Company Nanfen open-pit mine applications, the shock rate reached 68.28%. This research provides an effective way to improve the traditional assisted blasting technology.