this method . The result indicates that the environment of fully mechanized mining face is the best . The result also tells ushow to improve the coal mining environment and where is the emphasis to strengthen management . This helps to decrease environmental influence to mining accidents and to improve mining safety . 4.3. Countermeasures to improve underground environment After analyzing qualitatively and quantitatively the influence of underground environmental factors to mining accidents , we can distinguish the primary from the secondary . We can take some measures such as strengthening ventilation, installing air conditioner, eliminating noisy devices etc to improve underground environment so as to improve mining safety and ensure workers ’ safety and sustained efficient production .
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