摘要
为研究独头巷道掘进爆破后炮烟的扩散规律,以真实掘进巷道为试验对象,对爆破后炮烟中CO浓度随时间变化情况进行测定,并通过对测定数据的分析得到,当CO浓度达到峰值后,其浓度值呈现e指数衰减趋势,符合负指数衰减变化规律,并很快降低到允许安全浓度以下;采用线性回归的方法得到矿井专用行人巷内不同位置处CO浓度降低到标准容许浓度时的时间计算公式,为井下作业人员再次返回掘进工作面提供依据和参考。
In order to study the diffusion law of gun smoke after blasting in a single-headed roadway, combining the actual mining road as a test object, the change of the CO concentration in the gun smoke after blasting with time was measured,and the analysis of the measured data was obtained: When the CO concentration reached the peak, its concentration value showed an e-exponential decay trend, which was in line with the negative exponential decay change law, and quickly decreased below the allowable safe concentration;and the linear regression method was used to obtain that the CO concentration at different locations in the pedestrian roadway of the mine, when reduced to standard, the time calculation formula was got, which provided the basis and reference for the underground operators to return to the driving face again.
作者
徐家俊
夏方顺
梁俊奇
Xu Jiajun;Xia Fangshun;Liang Junqi(School of Safety Engineering,North China University of Science and Technology,Yanjiao 065201,China)
出处
《煤炭与化工》
CAS
2020年第8期117-120,共4页
Coal and Chemical Industry
基金
中央高校基本科研业务费资助项目(3142019053)。
关键词
爆破掘进
扩散规律
炮烟
CO浓度
blasting and driving
diffusion law
blasting smoke
CO concentration
