重、特大煤矿事故的时间规律

针对1970年以来1400多起重、特大煤矿事故,应用统计分析方法,探讨了煤矿重、特大事故的时间规律以及不同事故类型与死亡人数之间的关系,发现重、特大煤矿事故与月份、每天不同时间段等有一定相关.每年11、4、3、5、6等月份重、特大事故较多,2月份事故次数最少(Asymp Sig=0.018),时间上重、特大事故高峰时段主要集中在9:00-13:00(Asymp Sig=0.000).自70年代以来单次事故死亡人数没有明显减少,不同事故类型与死亡人数有明显不同(Asymp Sig=0.000),瓦斯事故、煤尘事故、火灾、水灾、煤与瓦斯突出等单次影响较大,事故的时间规律在日期上显现不明显(Asymp Sig=0.262).预防重、特大事故应尤其注意相应的时间段和相应的事故类型.

Time fluctuations of major coal accidents in China

The aims of this paper are to explore the time fluctuations about major coal accidents and the relationship between different kinds of accidents.Using SPSS 13.0 and through analyzing 1 433 coal major accidents reports from 1970,the author found major coal accidents correlate with different month and time periods.Most accidents occurred in Nov,Apr,Mar,May and July and what happened in Feb(Asymp.Sig=0.018),9:00-13:00 every day(Asymp Sig=0.000) is the least. Relations between kinds of accidents and death numbers(Asymp Sig=0.000),marsh gas accidents,grime blast,mining fire,mining floods,coal and gas outburst influence significantly.Deaths of each major coal accident dose not decrease from 1970.Changes of accidents along with dates didn't fluctuate distinctly.To prevent coal major incidents,corresponding time periods and accident types must be paid more attention.