【摘要】 介绍了定量评价煤破坏程度的意义．阐述了研究思路和研究方法，尝试采用筛分分析的方法得出粒径小于０５ｍｍ煤的百分含量来反映煤的破坏程度．通过对５２个样品的筛分分析，认为筛分指数可以作为定量评价煤的破坏程度的指标．更多还原

【Abstract】 On the basis of the screening analysis of 52 samples, the screening index is suggested as a useful number to evaluate the breakage degree of coal. Therefore, it is considered that the quantitative evaluating the breakage degree of coal is a practical method for the studies and researches in this field.更多还原