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在不同冲击能的切削破碎水泥砂浆岩块试验基础上,分析了冲击间距与切削深度的关系及其比值对破岩比能的影响,并采用GP算法对冲击切削破岩的分形特征进行了研究,探讨了不同冲击间距和切削深度对关联维数的影响.研究表明:破岩比能随冲击间距与切削深度的比值呈凹形曲线分布,当冲击间距减少时,能大幅度提高岩石的切削深度,并且存在最优的比值,使破岩比能最小.关联维数是反映破岩比能改变的灵敏度量,能直观、有效地识别冲击间距对破岩效果的影响程度,为选取最佳冲击间距,使破岩效果达到最优,提供了新的分析途径.
Based on the experiments of cutting broken cement mortar with different impact energy, the relationship between the impact distance and depth of cut and the influence of its ratio on the specific energy of rock breaking were analyzed, and the fractal characteristics of rock breaking by impact cutting were studied by GP algorithm , The influence of different impact spacing and depth of cut on the correlation dimension is discussed.The results show that the ratio of rock breaking to rocking can be concavely curved with the ratio of impact spacing to depth of cut and the rock cutting can be greatly improved when the impact spacing is reduced Depth, and there is the optimal ratio, so that the rock breaking ratio is the smallest.The correlation dimension is the sensitive measure to reflect the change of rock breaking ratio, which can intuitively and effectively identify the impact of impact spacing on the rock breaking effect, in order to select the best Impact spacing, the rock breaking effect to achieve the best, providing a new analytical approach.