中文摘要：

为瓦斯爆炸感应期内探测与抑爆技术的开发提供理论依据和数据支持,采用小尺度试验和光谱分析的方法,分析瓦斯爆炸感应期内OH,NH2和NH自由基及其特征光谱。结果表明,在瓦斯爆炸感应期内火焰中OH的振动转动谱带、Meinel’s系统谱带出现频率较高,有很大概率被探测到,适于作为辨识瓦斯爆炸的信号;试验条件下,OH的振动转动谱带在965和978 nm处,Meinel’s谱带在940和1 000 nm处,306.4 nm谱带在282,309,313,318和320 nm处,NH2的Ammoniaα谱带在735 nm处,NH的336.0 nm谱带在311 nm处,光谱强度相对较强,这些较强的谱线适于作为辨识自由基和瓦斯爆炸信号的依据。

英文摘要：

The characteristic spectra of OH /NH2/ NH in induction period of methane explosion got from small-scale experiments were analyzed,which were helpful in developing the technique of gas explosion detection and suppression. It is showed that OH vibration-rotation bands,Meinel ＇s bands in the flame appear frequently,the probability of detecting them are high,the characteristic spectra of these bands can be used for detecting methane explosion,and that spectral intensities of spectral lines of OH vibration-rotation bands at 965 nm,978 nm,OH Meinel＇s bands at 940 nm,1 000 nm,OH 306. 4 nm system bands at 309 nm,313 nm,318 nm,320 nm,NH2Ammonia α bands at 735 nm,NH 336. 0 nm system bands at 311 nm are relatively great,and can be used as the basis for identifying the radicals and signals of methane explosion.