Prediction of concentration of toxic gases produced by detonation of commercial explosives by thermochemical equilibrium calculations  

作　　者：Muhamed Suceska B.Stimac Tumara Vinko Skrlec Sinisa Stankovic 

机构地区：[1]University of Zagreb,Faculty of Mining,Geology and Petroleum Engineering,Pierottijeva 6,10000,Zagreb,Croatia

出　　处：《Defence Technology（防务技术）》2022年第12期2181-2189,共9页Defence Technology

基　　金：This research was supported by the Croatian Science Foundation(HRZZ),Croatia,under the projects IP-2019-04-1618“NEIDEMO”.

摘　　要：An adverse effect resulting from explosive mine blasts is the production of toxic nitrogen oxides(NO and NO_(2)) and carbon monoxide(CO).The empirical measurements of the concentration of toxic gases showed that it depends not only on the composition of an explosive and properties of its ingredients but also on several other parameters,such as volume of blasting chamber,explosive charge mass and design,confinement characteristics,surrounding atmosphere,etc.That explains why measured concentrations of toxic gases reported in literature significantly differ.In this paper,we discuss the possibility of theoretical prediction of the concentration of toxic gases by thermochemical equilibrium calculation applying two models:ideal detonation model and deflagration model.It can be demonstrated that thermochemical calculations can provide a good estimation of the measured concentrations and reproduce experimentally obtained effects of additives on the production of toxic gases.It was also found that the ideal detonation model applies to heavily confined explosive charges,while the deflagration model is more suitable for low detonation velocity explosives with light confinement.

关 键 词：Mining ANFO Emulsion explosive Toxic fumes Thermochemical code EXPLO5 

分 类 号：X831[环境科学与工程—环境工程] O642.3[理学—物理化学]