| 煤实验最短自然发火期定量测定方法研究 |
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| 引用本文： | 杨永良,李增华,高思源,唐一博,刘震.煤实验最短自然发火期定量测定方法研究[J].采矿与安全工程学报,2011,28(3):456-461,467. |
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| 作者姓名： | 杨永良 李增华 高思源 唐一博 刘震 |
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| 作者单位： | 中国矿业大学安全工程学院,江苏徐州,221116 |
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| 基金项目： | 中国矿业大学青年科研基金项目(2009A006); 国家自然科学基金项目(50474067) |
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| 摘 要： | 为有效防治煤炭自燃,预测煤体最短自然发火期是非常必要的.以绝热圆柱形煤柱为物理模型,建立了煤实验最短自然发火期预测模型,利用实测的煤自燃基本参数,通过解算分析了漏风速度、粒度等参数对煤自然发火期的影响规律,最终准确测试了6个矿井不同煤体的实验最短自然发火期.结果表明:随漏风速度的增大,煤自然发火期先减小后增大;煤体粒度越小,最佳风速呈线性增大;随煤体粒度的增大,最佳风速条件下的自然发火期先减小后增大;煤体自燃倾向性越高,最短自然发火期越短;以张集肥煤为例,自然发火的最佳粒度为1～3mm,最佳漏风速度为0.001 1m/s,其实验最短自然发火期为26d.
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| 关 键 词： | 煤自然发火 最短自然发火期 最佳风速 最佳粒度 氧化放热强度 |
The Quantitative Method for Measuring the Shortest Spontaneous Combustion Period |
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| YANG Yong-liang,LI Zeng-hua,GAO Si-yuan,TANG Yi-bo,LIU Zhen.The Quantitative Method for Measuring the Shortest Spontaneous Combustion Period[J].Journal of Mining and Safety Engineering,2011,28(3):456-461,467. |
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| Authors: | YANG Yong-liang LI Zeng-hua GAO Si-yuan TANG Yi-bo LIU Zhen |
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| Affiliation: | YANG Yong-liang,LI Zeng-hua,GAO Si-yuan,TANG Yi-bo,LIU Zhen(School of Safety Engineering,China University of Mining & Technology,Xuzhou,Jiangsu 221116,China) |
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| Abstract: | The forecast of the shortest spontaneous combustion period for prevention and control of spontaneous combustion of coal is quite necessary.Based on the physical model of adiabatic cylindrical coal pillar,an experimental prediction model of coal spontaneous combustion is established.Using the measured parameters of coal spontaneous combustion,we calculate the model and accurately and test the shortest spontaneous combustion period in six different coal mines through analyzing the distribution of the factors ... |
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| Keywords: | spontaneous combustion of coal the shortest spontaneous combustion period the air leakage rate for the shortest spontaneous combustion period the size of coal for the shortest spontaneous combustion period oxidation heat release intensity of coal |
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