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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０５ｍｍ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．
The significance of quantitative evaluation of coal destruction is introduced. Described the research ideas and research methods, try to use sieve analysis method to get the particle size of less than 0.5 mm coal percentage to reflect the extent of the destruction of coal. Through the sieve analysis of 52 samples, it is considered that the screening index can be used as an index to quantitatively evaluate the degree of destruction of coal.