松散煤体中的氧气扩散模型及数值分析

Oxygen pervasion model in loose coal and its numerical analysis

根据氧气在松散煤体中的扩散理论分析 ,建立起松散煤体中的氧气扩散模型 ,并推导出松散煤体中一维氧浓度非稳态平衡方程 .通过数值分析得到松散煤体中氧浓度分布方程 ,并由此得出氧气在松散煤体中最大渗透距离的计算公式 ,利用该公式计算出氧气在几个矿的松散煤体中的最大扩散距离 .

Based on theory analysis of oxygen pervasion in loose coal, oxygen pervasion model is set up, and the unstable state equilibrium equation of one dimension oxygen concentration is deduced in loose coal. The distribution equation of oxygen concentration is gained by numerical analysis, and from this, the calculating formula of the maximum oxygen pervasion distance is obtained in loose coal. Using the formula, the maximum oxygen pervasion distance of several coal mine is calculated.