Model of coal-dust explosion suppression by rock dust entrainment. Report of Investigations/1988
Model of coal-dust explosion suppression by rock dust entrainment. Report of Investigations/1988
复制标题
岩尘夹带抑制煤尘爆炸模型。
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
K. Ford
中科院分区：
文献类型：
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作者：
J. Edwards;K. Ford
矿务局开发了一个数学模型，用来计算煤尘和岩尘在进矿底板上的复合沉积所产生的空气动力引起的扬起，以及随后煤尘在煤尘爆炸的燃烧传播区域之前的传输。对于以恒定火焰速度扩展的燃烧区近似的一系列实验爆炸性试验，计算了火焰锋面前方空气中岩尘的质量分数以及被燃烧区覆盖的质量分数。对理论结果的统计分析表明，传播和非传播测试样本属于不同的总体，具有很高的置信度。这一分析还得到了燃烧区平均温度的独立模型的支持。
The Bureau of Mines developed a mathematical model to calculate the aerodynamically induced lifting of coal and rock dust from a composite deposition on a mine entry floor and the subsequent transport of the dust ahead of the propagating combustion zone of a coal dust explosion. For a series of experimental explosibility tests approximated by combustion zones that expand at a constant flame velocity, the mass fraction of airborne rock dust ahead of the flame front, as well as the mass fraction overtaken by the combustion zone, was calculated. A statistical analysis of the theoretical results demonstrated with a high level of confidence that the propagating and nonpropagating test samples belonged to separate populations. The analysis was further supported by an independent model of the average temperature over the combustion zone.