在黄铁矿进行爆破时,存在着硫化矿尘爆炸的危险,爆炸火焰蔓延区内空气的瞬时温度高达1200℃,气体含硫浓度达7～2%。为了采取安全措施,必须根据爆破工作参数和采矿技术条件及时预测火焰蔓延区的可能规模在捷格嘉尔斯克、罗莫夫斯克,克拉斯诺格瓦尔杰斯克和其他矿山的高硫(40～50%)、坚硬黄铁矿中掘进独头巷道时,进行过确定硫化矿尘爆炸时火焰蔓延区规模的试 In the pyrotechnic blasting, there is the danger of explosion of sulfide dust. The instantaneous temperature of the air in the explosive flame spread zone is as high as 1200 ℃ and the gas concentration of sulfur is 7 ~ 2%. In order to take safety measures, it is necessary to timely predict the possible scale of the flame spread zone according to blasting working parameters and mining technical conditions in the high-sulfur (40-40%) areas of the Czech Republic, the Czech Republic, 50%), a trial of determining the size of the flame spread zone at the time of sulfide dust explosion was carried out during the excavation of single-headed roadway in hard pyrite