【摘要】 煤矸石骨料的分形特征是影响其力学性能的重要因素。基于图像采集与处理技术对不同粒级煤矸石骨料的分形特征进行定量分析，并结合工业分析和XRD分析研究了煤矸石骨料物相组成的分形特征。结果表明，不同粒级0.30～<0.60、0.60～<1.18、1.18～<2.36、2.36～<4.75、4.75～9.00 mm煤矸石骨料分形维数为1.085 4(R~2=0.985 9)、1.080 4(R~2=0.962 7)、1.065 4(R~2=0.967 3)、1.023 4(R~2=0.979 5)、0.973 8(R~2=0.942 6)。工业分析和XRD检测结果表明：随煤矸石骨料粒径增大，分形维数、高位发热量减小，同时固定碳、高岭石含量逐渐减少，但石英含量逐渐增加。说明煤矸石在破碎过程中石英向粗粒级富集，碳和黏土组分向细粒级富集。高岭石、固定碳含量与煤矸石骨料分形维数的相关系数分别为0.947和0.910,均与煤矸石骨料分形维数有显著正相关关系。基于相关系数法将煤矸石骨料形状分形维数与组分含量建立联系，为煤矸石骨料形状及组分含量联合分析评价煤矸石骨料品质提供了一种新的方法，并为煤矸石资源化利用提供依据。更多还原

【Abstract】 The shape characteristics of coal gangue aggregate is an important factor affecting its mechanical properties. Five particle sizes of coal gangue aggregate were selected. Based on image acquisition and processing technology, the fractal of projection area and projection perimeter was used to quantitatively analyze the shape of different particle sizes of coal gangue aggregate. At the same time, the fixed carbon content, high calorific value and XRD detection of different particle sizes were measured and the mineral composition was analyzed. Based on the correlation analysis method, the relationship between the shape fractal and the mineral composition of coal gangue aggregate was analyzed. The study found that the fractal dimension of 0.30-<0.60、0.60-<1.18、1.18-<2.36、2.36-<4.75、4.75-9.00 mm coal gangue aggregate are 1.085 4(R~2=0.985 9),1.080 4(R~2=0.962 7),1.065 4(R~2=0.967 3),1.023 4(R~2=0.979 5),0.973 8(R~2=0.942 6). The results of industrial analysis and XRD test show that with the increased of coal gangue aggregate particle size, the fractal dimension and high calorific value decrease, while the content of fixed carbon and kaolinite decrease gradually, but the content of quartz increase gradually. This phenomenon indicates that during the crushing process of coal gangue, quartz is enriched to coarse particles, and carbon and clay components are enriched to fine particles. The correlation analysis results show that the content of kaolinite(0.947) and fixed carbon(0.910) have a significant positive correlation with the fractal dimension of coal gangue aggregate. Based on the correlation coefficient method, the fractal dimension of coal gangue aggregate shape is related to the component content, which provides a new method for the joint analysis of coal gangue aggregate shape and component content to evaluate the quality of coal gangue aggregate, and provides a basis for the resource utilization of coal gangue.更多还原