Flying rock accident accounts for a great ratio of blasting accidents in open stone pits, which poses serious threat to safe production in mining area.

在诸多露天采场爆破事故中，飞石事故占很大的比率，对矿区的安全生产构成了严重威胁。

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The coal face of blasting mine in underground coal mine is a very complicated system of disaster environment, the spatiotemporal limit increases the accident probability of blasting operations.

煤矿井下炮采工作面是一个非常复杂的灾害环境系统，又由于时间、空间的限制，使得炮采工作面爆破作业引发事故的可能性增加。

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The importance of it in safety production of coal mine was discussed through accident case, according to theory of blasting powder and function of stemming.

本文根据炸药的作功原理和炮眼封泥的作用，通过事故案例，论述炮眼封泥质量在煤矿安全生产中的重要性。

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