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基于分形理论对不同击实能和含水量条件下的粉土状黄土进行粒度分析,研究击实后土体颗粒形状的变化情况和颗粒体积的分形行为。结果表明,击实后的粉土状黄土颗粒体积分布遵循分形规律;在一定含水量条件下,分维值D会随着击实能的增加而减小;当击实能较大时,对土样颗粒造成的形状改变也更为明显;在一定击实能条件下,当土样含水量小于最优含水量时,分维值D随着含水量的增加而减小;当土样含水量大于最优含水量后,分维值D呈现离散性,没有一定的规律。
Based on the fractal theory, the silt size of silty loess with different values of compaction energy and water content was analyzed to study the change of particle shape and the fractal behavior of particle volume after compaction. The results show that the compacted volume distribution of silty loess particles complies with the fractal rule. Under a certain water content, the fractal dimension D decreases with the increase of strike energy. When the compaction energy is large, When the water content of soil samples is less than the optimal water content, the fractal dimension D decreases with the increase of water content. When soil samples contain After the water content is greater than the optimal water content, the fractal dimension D appears discrete, and there is no certain law.