| 徐精彩,文虎,邓军,张幸亥.煤自燃极限参数研究[J].火灾科学,2000,9(2):14-18. |
| 煤自燃极限参数研究 |
| Study Limit Parameter of Coal Self-ignite |
| 投稿时间：1999-12-17 |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目:国家自然科学基金资助项目(批准号:59974020) |
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| 中文关键词: 煤自燃 极限参数 危险区域 |
| 英文关键词:coal self-ignite limit parameter dangerous region |
| 摘要点击次数: 1002 |
| 全文下载次数: 932 |
| 中文摘要: |
| 本文定义了煤自燃所需必要条件的极限值 ,根据煤自身氧化放热性能及其所处的蓄热环境 ,应用热平衡法推导出引起煤自燃的最小浮煤厚度、最低氧浓度、最大漏风强度、上限平均粒径等极限参数的计算方法。提出只有同时满足浮煤厚度大于极限最小厚度 ,氧浓度大于下限氧浓度 ,漏风强度小于上限漏风强度 ,平均粒径小于上限平均粒径的区域 ,才是煤层自燃的危险区域 ,为煤自燃预测防治提供了量化的理论依据. |
| 英文摘要: |
| The limit of essential condition of coal self-ignite is defined in this paper. According to coal exothermic capability and its thermal storage surroundings,limit parameters of self-ignite,such as the lowest thickness of float coal,the lower limits of oxygen concentration,upper limits of wind leakage intensity and max mean sizes,whose computational method is deduced by applying thermal equilibrium. Conclusion is get that the region in which the thickness of float coat,the oxygen concentration,the wind leakage intensity and the mean sizes is beyound of their limits is dangerous region intend to occur spontaneous conbustion. It offers a quantitative theoretic criterion for coal self-ignite forecasting and prevention. |
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