摘要
为研究CO_2气体对瓦斯爆炸的阻尼效应,以定容弹模型模拟采空区(受限空间),采用数值计算方法,从化学动力学角度,在机理上进行了研究。结果表明:随着CO_2气体的冲入,瓦斯爆炸延迟时间逐渐增大,爆炸强度逐渐减弱,对灾害气体(NO)及链式反应自由基的抑制加强,同时促进甲烷生成与消耗的关键反应步敏感性系数整体不断降低,但促进CH4生成降低幅度小于促进CH4消耗降低幅度。
In order to research the damping effect of CO2 on gas explosion, the constant volume bomb model and numerical methods were used to simulate the goal （confined space）, which is from the perspective of chemical kinetics to study the mechanism. The result showed that： the delay time of gas explosion increased, explosive strength gradually weakened, the inhibition of disaster gas （NO） and free radicals in the chain reaction strengthened with the crushing of CO2 ; at the same time, the sensitivity coefficient of key reaction step which promotes production and consumption of methane constantly reduced overall, but the reduction in generation of CH4 was less than the reduction in consumption of CH4.
出处
《煤矿安全》
CAS
北大核心
2016年第9期1-3,7,共4页
Safety in Coal Mines
基金
新疆自治区高层次人才培养计划资助项目
新疆工程学院横向项目(2014xgyh041612)
"十三五"国家重大专项资助项目(2016ZX05045-004)
关键词
瓦斯爆炸
二氧化碳
阻尼效应
数值计算
抑制作用
gas explosion
CO2
damping effect
numerical calculation
inhibiting effect
