基于数理统计的余吾煤矿瓦斯超限事故 发生规律及对策研究
Research on law and countermeasures of gas over-limit accident in Yuwu Coal Mine based on mathematical statistics
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摘要: 瓦斯超限是形成瓦斯爆炸事故的根源。为分析瓦斯超限事故发生规律,以余吾煤矿2018年1月至2019年8月期间的瓦斯超限(预警)事故为基础,运用数理统计的方法,从事故发生班次、发生地点及预警时长等方面进行研究。结果表明:在0点班中的01:00—02:00和06:00—07:00时间段内事故发生率最高,但事故整体仍处于可控范围内,且88%的事故发生在掘进面内;大部分事故的发生都具有时长短、浓度低的特点;超限事故主要集中在风筒接换作业、割煤作业、钻孔作业3种作业类型中。
Abstract: Gas over-limit is the cause of gas explosion accident. In order to analyze the regularity of gas over-limit accidents, based on the gas over-limit accidents from January 2018 to August 2019 in Yuwu Coal Mine, by using mathematical statistics, we study the frequency, location and duration of early warning of accidents, and the results show that the highest accident rate is in the 01:00-02:00 and 06:00-07:00 time periods, and the overall accident rate is still within the controllable range, and 88% of the accidents occurred in the driving surface; most of the accidents have the characteristics of short duration and low concentration; the accidents are mainly concentrated in the air cylinder replacement operation, coal cutting operation, and drilling operation.
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Keywords:
- gas over-limit /
- control chart method /
- coupling analysis /
- countermeasure research /
- accident-cause
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