摘要
通过对采煤工作面顶板事故类型的分析，论述了事故的基本规律及重点防范的时期和部位，揭示了采煤工作面安全生产的关键，提出了一些有效的预防措施。
This paperpresents the basic law of accidents andtime and location that accidents easilyoccurred on the basis of the analysis of thetype of roof-fall ccidents in a coal face,brings to light the crux of safe productionin coal face, and puts for ward some effe-ctive precautions against snch accidents.
