| 沿空巷破碎煤体自燃耗氧及升温特征数值模拟 |
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| 引用本文： | 朱红青,刘鹏飞,刘星魁,王海燕. 沿空巷破碎煤体自燃耗氧及升温特征数值模拟[J]. 煤炭科学技术, 2011, 39(11): 63-66 |
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| 作者姓名： | 朱红青 刘鹏飞 刘星魁 王海燕 |
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| 作者单位： | 中国矿业大学（北京）资源与安全工程学院,北京100083／中国矿业大学（北京）煤炭资源与安全开采国家重点实验室,北京100083 |
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| 基金项目： | 国家自然科学基金资助项目(51074168) |
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| 摘 要： | 为研究巷道顶煤和煤柱破碎后由漏风引起的自燃耗氧及升温规律,在质量、动量和热量守恒模型的基础上利用FLUENT软件求解了沿空巷周围破碎煤体的稳态氧气分布和温度的动态变化过程。计算结果表明：在煤柱较完整的情况下,顶煤的氧气浓度分布高于煤柱,但二者都具有自然发火的危险。由于散热作用,高温区离二者的漏风边界都有一定的距离,顶煤升温速率较煤柱更快。在改变漏风强度后,高温区位置和范围也会随之改变。此研究结论可以帮助缩小现场火源区的寻找范围,以便及时采取措施抑制自燃。
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| 关 键 词： | 顶煤 煤柱 氧气分布 高温区 自燃 |
Numerical Simulation on Oxygen Consumption and Temperature Rising of Broken Coal Spontaneous Combustion in Gateway Retained Along Goaf |
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| ZHU Hong-qing,,LIU Peng-fei,LIU Xing-kui,WANG Hai-yan,,Beijing ,China,.National Key Lab of Coal Resource , Safety Mining,China). Numerical Simulation on Oxygen Consumption and Temperature Rising of Broken Coal Spontaneous Combustion in Gateway Retained Along Goaf[J]. Coal Science and Technology, 2011, 39(11): 63-66 |
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| Authors: | ZHU Hong-qing LIU Peng-fei LIU Xing-kui WANG Hai-yan Beijing China .National Key Lab of Coal Resource Safety Mining China) |
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| Affiliation: | ZHU Hong-qing1,2,LIU Peng-fei1,LIU Xing-kui1,WANG Hai-yan1,2(1.School of Resource and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China,2.National Key Lab of Coal Resource and Safety Mining,China) |
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| Abstract: | In order to study the spontaneous combustion oxygen consumption and temperature rising law due to the air leakage when the top coal and coal pillar broken in the gateway,based on the quantity,momentum and heat conservation model,the FLUENT software was applied to obtain the stable oxygen distribution and temperature dynamic variation process of the broken coal mass around the gateway along the goaf.The calculation result showed that when the coal pillar was in completed condition,the oxygen content distribu... |
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| Keywords: | top coal coal pillar oxygen distribution high temperature zone spontaneous combustion |
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