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| 综放工作面煤柱内漏风与耗氧过程的数值模拟 | |
| 引用本文： | 李宗翔,孙广义,王继波.综放工作面煤柱内漏风与耗氧过程的数值模拟[J].力学与实践,2001,23(4):15-18. |
| 作者姓名： | 李宗翔 孙广义 王继波 |
| 作者单位： | 1. 辽宁工程技术大学 2. 黑龙江科技学院 3. 铁法煤炭集团晓南煤矿, |
| 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。 |
| 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 |
| 修稿时间： | 2000年11月29 |
NUMERICAL SIMULATION OF AIR LEAKAGE AND OXYGEN CONSUMPTION IN COAL PILLARE CLOSE TO COMPREHENSIVE COAL FACE WITH CAVING METHOD FOR TOP SEAM |
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| LI Zongxiang.NUMERICAL SIMULATION OF AIR LEAKAGE AND OXYGEN CONSUMPTION IN COAL PILLARE CLOSE TO COMPREHENSIVE COAL FACE WITH CAVING METHOD FOR TOP SEAM[J].Mechanics and Engineering,2001,23(4):15-18. | |
| Authors: | LI Zongxiang |
| Abstract: | 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. |
| Keywords: | caving the roof coal coal pillar air leakage flow distribution of oxygen density spontaneous combustion finite element |
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