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应用分形几何的方法对冲击加载试验中大理岩破碎块度分布进行统计分析。结果表明,大理岩的冲击破碎块度分布具有分形特征,采用破碎分形维数对岩石破碎过程进行定量描述,可以合理地反映大理岩冲击破碎的程度;大理岩的平均破碎块度与冲击加载速率有着较强的相关性,随着加载速率的提高迅速减小;建立了能量吸收与破碎分维的关系,从能量吸收的角度可以较好地解释破碎分维的变化规律。破碎分维是评价岩石冲击破碎块度分布的理想指标,可较为全面地反映岩石冲击破碎的全过程。
Fractal geometry method was used to analyze the fragmentation distribution of marble in impact loading test. The results show that the fractal distribution of marble rock fragments has fractal characteristics. Using the fractal dimension to describe the rock fragmentation quantitatively, it can reasonably reflect the degree of marble rock fragmentation. The average fragmentation degree of marble and the impact loading rate It has a strong correlation with the loading rate decreases rapidly; established the relationship between energy absorption and broken fractal dimension, which can explain the variation regularity of fractal fractal dimension well from the perspective of energy absorption. Broken fractal dimension is an ideal indicator to evaluate the rock fragmentation distribution, which can reflect the whole process of rock fragmentation more comprehensively.