【摘要】 本文从定量的角度探讨了死亡人数、采面机械化程度、掘进机械化程度和年产量分别对百万吨死亡率的影响程度，以期在今后的安全工作中抓住主要方面。并为其它类型因素间的关联分析提供了途径。更多还原

【Abstract】 The authors quantitatively studied the problem that to what extent the deathnumber,mechanization on coal face and at dniving and annual production influence death rateper million ton. With the help of the results,we can better focus our energy on the main aspectsof work pertaining to safety in mines.And the analysis provided a good way of applying the greyrelative degree analysis to other factors更多还原