煤矿安全2017，Vol.48Issue(2)：26-27,32,3.DOI:10.13347/j.cnki.mkaq.2017.02.007
低浓度瓦斯对煤尘爆炸下限的影响研究
Study on Influence of Low Concentration Gas on Lower Explosive Limit of Coal Dust
王者鹏1
作者信息
- 1. 山东科技大学矿业与安全工程学院,山东青岛266590;中煤科工集团重庆研究院有限公司,重庆400039
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摘要
Abstract
Using 20 L nearly spherical explosion characteristic test system,the paper studies the change laws of lower explosive limit of three different kinds of coal dust with low concentration gas.The study shows that coal dust lower explosive limit decreases with the increase of gas concentration under this experimental condition.When the gas concentration is in the scope of 0 to 1.0％,coal composition has a greater influence on lower explosive limit,the corresponding explosive composite system of gas and coal dust is characterized as "strong coal dust";when the gas concentration is greater than 1％,the numerical difference of coal dust lower explosive limit concentration is small,and the influence of coal composition on coal dust lower explosive limit is no longer obvious;the corresponding composite explosive system of gas and coal dust coexisting is characterized by "strong gas".关键词
瓦斯爆炸/煤尘爆炸/瓦斯煤尘共存/瓦斯浓度/爆炸下限Key words
gas explosion/coal-dust explosion/gas and coal-dust coexisting/gas concentration/lower explosive limit分类
矿业与冶金引用本文复制引用
王者鹏..低浓度瓦斯对煤尘爆炸下限的影响研究[J].煤矿安全,2017,48(2):26-27,32,3.
