摘要
对综采放顶煤工作面采空区隔离煤柱内的漏风流动规律及氧浓度消耗变化过程用数值模拟方法进行了研究，求解了空气在煤体流场中的漏风渗流方程和氧浓度的渗流扩散－消耗方程，得出煤柱漏风流态和氧浓度分布的动态变化过程，为分析松散煤柱体内自然发火的产生过程和判断自然发火危险带的深度提供一种新方法．
Numerical simulation method has been used to study the process of oxygen density consumption and for leakage flow in the partition coal pillars close to the goaf of comprehensive coal face with caving method for top seam. The equations of air leakage flow and seepage diffusion-consumption of oxygen density in the flowing field of coal pillar are derived. The dynamic process of air leakage flow and oxygen density distribution is revealed. Thus a new method is provided for analysing the sponta- neous combustion in the loose coal pillar and determining the depth of the dangerous zone of spontaneous combustion.
出处
《力学与实践》
CSCD
北大核心
2001年第4期15-18,共4页
Mechanics in Engineering
关键词
综放面
煤柱
漏风渗流
氧浓度分布
自然发火
有限元
耗氧过程
数值模拟
caving the roof coal, coal pillar, air leakage flow, distribution of oxygen density, spontaneous combustion, finite element
