| 管道中煤尘爆炸特性实验 |
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| 引用本文： | 宫广东.管道中煤尘爆炸特性实验[J].煤炭学报,2010,35(4):609-612. |
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| 作者姓名： | 宫广东 |
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| 作者单位： | 北京理工大学 |
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| 基金项目： | 国家自然科学基金资助项目(10772032);;爆炸科学与技术国家重点实验室基金资助项目(ZDKT08-2-6,YBKT09-1) |
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| 摘 要： | 在长度为32.4 m、内径为199 mm的圆形管道中采用强点火方式对甲烷-空气混合物及甲烷-煤尘-空气混合物爆炸超压传播规律及爆速进行了研究。研究结果表明：强点火条件下甲烷－空气混合物的最大爆压和爆速分别为4 MPa、1 766 m/s，在标准状态瓦斯爆炸极限浓度外2.5%、4.1%、15.2%时也出现稳定爆轰。相同浓度甲烷-煤尘-空气混合物爆炸超压及爆速要大于甲烷-空气、煤尘-空气混合物，甲烷-煤尘-空气混合物在爆炸当量浓度时，随着煤尘浓度越大，瓦斯浓度越小，爆炸超压和爆速越小。
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| 关 键 词： | 管道 煤尘爆炸 瓦斯爆炸 强点火能量 爆炸力学 |
| 收稿时间： | 2009-09-15 |
| 修稿时间： | 2009-11-10 |
Experimental research on methane and coal dust explosion characteristics in tube |
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| GONG Guang-dong,LIU Qing-ming,HU Yong-li,BAI Chun-hua.Experimental research on methane and coal dust explosion characteristics in tube[J].Journal of China Coal Society,2010,35(4):609-612. |
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| Authors: | GONG Guang-dong LIU Qing-ming HU Yong-li BAI Chun-hua |
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| Affiliation: | State Key Laboratory of Explosion Science and Technology/a>;Beijing Institute of Technology/a>;Beijing 100081/a>;China |
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| Abstract: | The explosion overpressure and speed of methane-air mixtures and methane-coal dust-air mixtures was studied in a 199 mm inner diameter and 32.4 m long horizontal tube under the condition of strong ignition.The experiments results show that the maximum overpressure and speed of methane-air mixtures is 4 MPa and 1 766 m/s with strong ignition.Detonation happened when the methane concentration is 2.5%,4.1%,15.2% which is out of the limit concentration.The explosion overpressure and speed of methane-coal dust-a... |
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| Keywords: | tube coal dust explosion gas explosion strong ignition mechanics of explosion |
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