起爆方式的分形理论优选决策

Analysing of Blasting Effect of Detonating Metheds Using Fractal Theory

介绍了分形理论及其在岩石爆破破碎过程中的应用 ,指出岩石分形维数与岩石所受的压力和作用时间相关联。通过分析反向起爆的特点 ,运用分形理论 ,得出反向起爆优于正向起爆在于前者产生的平均压力大 ,作用时间长 ,从而增加了岩石的分形维数 ,提高了块度积累率 。

The fractal theory and its applications in the process of the rock blasting are described. The fractal dimension of rock fracturing is considered to associate with the stress of blasting and the impact time. The characters of the indirect initiation and direct initiation are analyzed. According to the fractal theory, it is concluded that the indirect initiation is superior to the direct one. This is due to the fact that the former has more stress and longer time, increasing so much the fractal dimesions of the blasting rock that accumulative rate of rock fragment is increased and the rate of massive rock is decreased.