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煤矿断层密度是评价煤层破坏程度的一个常用指标。由于它是单因素评价，所以在实际应用中往往受到限制。文中以平顶山五矿戊９ －１０ 煤层断层为例，采用分维计算方法对断层密度进行了重新定量，结果表明，断层密度分维与断层长度、条数和断层密度分布的均一性有关，它为煤矿断层密度的定量评价提供了一种新的方法。
Coalmine fault density is a common indicator to evaluate the degree of coal seam damage. Because it is a single factor evaluation, it is often limited in practical applications. Taking Ping 9-5 coal seam of Pingdingshan Minmetals as an example, the fault density was re-quantified by the method of fractal dimension calculation. The results show that the fractal dimension of fractures is related to the uniformity of fault length, number and distribution of fault density. It provides a new method for the quantitative evaluation of the fault density in coal mines.