采空区火灾多元可燃气体对CH4爆炸极限的影响
Influence of multiple combustible gases on explosion limit of CH4 in goaf fires
单麒源 1刘永立 1巩宪辉 1张政豪1
作者信息
- 1. 黑龙江科技大学 矿业工程学院,哈尔滨 150022
- 折叠
摘要
为研究采空区发生火灾时多元可燃气体对CH4 爆炸极限的影响,通过煤程序升温实验、20 L球爆炸参数实验并结合采空区火灾环境,获取不同温度下多元可燃气体的生成规律,分析影响CH4 爆炸极限的主要气体成分,开展基于CO和H2 的多元可燃气体对CH4 爆炸极限影响实验,利用SPSS软件分析并拟合线性回归方程.结果表明:在煤矿采空区火灾前期CO含量最多,是监测自燃的重要指标;CO和H2 对CH4 爆炸极限有一定影响,H2 含量较少,但对CH4 爆炸极限的影响却更为显著;SPSS软件建立的线性回归模型符合统计学意义,验证了多元可燃气体对CH4 爆炸极限的作用规律.该研究为制定煤矿采空区火灾应急救援方案提供了科学依据.
Abstract
This paper is devoted to investigating the effects of multi-component combustible gases on the explosion limits of CH4 during goaf fires.The study involves obtaining the generation patterns of multi-component combustible gases at different temperatures through the coal programmed heating experi-ments,20 L spherical explosion parameter experiments and the goaf fire environment,analyzing the pri-mary gas components influencing CH4 explosion limits,conducting the experiments that the CH4 explosion limits are influenced by CO and H2 multi-component combustible gases,and using SPSS software to ana-lyze and fit the linear regression equations.The results show that CO is the predominant gas during the early stages of goaf fires and serves as a critical indicator for spontaneous combustion monitoring.Both CO and H2 influence the explosion limits of CH4,but the less content of H2 has more significant impact.The linear regression model established by SPSS software is in accord with statistical significant,verifying the effects of multi-component combustible gases on CH4 explosion limits.This research provides a scien-tific basis for formulating emergency response plans for goaf fires in coal mines.
关键词
采空区火灾/瓦斯爆炸/多元可燃气体/爆炸极限Key words
gob fire/gas explosion/multi-component combustible gas/explosion limit引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据