| 煤与瓦斯突出气体逆流影响模式研究 |
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| 引用本文： | 高布桐,韦善阳,曲日红,张林,张勇,黄聪.煤与瓦斯突出气体逆流影响模式研究[J].中国安全生产科学技术,2022,18(4):98-105. |
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| 作者姓名： | 高布桐 韦善阳 曲日红 张林 张勇 黄聪 |
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| 作者单位： | （1.贵州大学 矿业学院，贵州 贵阳 550025；2.贵州省煤矿设计研究院有限公司，贵州 贵阳 550025） |
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| 基金项目： | * 基金项目: 贵州省科技计划项目（黔科合支撑〔2021〕一般514,一般353）；国家自然科学基金项目（51864009） |
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| 摘 要： | 为预防井下瓦斯气体逆流引起瓦斯爆炸等二次伤害,促进煤矿安全生产,建立瓦斯逆流运移扩散模型,采用相似试验研究不同风速和气体量影响下的气体逆流运移规律,根据试验系统的巷道模型,运用Fluent软件建立几何模型,模拟不同风速和涌出量对气体逆流的影响模式,观察同一测点或时间下2种因素对瓦斯浓度变化的影响,并以过往案例验证结论....
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| 关 键 词： | 瓦斯逆流 风速 涌出量 相似试验 数值模拟 |
Study on influence mode of gas counterflow in coal and gas outburst |
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| GAO Butong,WEI Shanyang,QU Rihong,ZHANG Lin,ZHANG Yong,HUANG Cong.Study on influence mode of gas counterflow in coal and gas outburst[J].Journal of Safety Science and Technology,2022,18(4):98-105. |
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| Authors: | GAO Butong WEI Shanyang QU Rihong ZHANG Lin ZHANG Yong HUANG Cong |
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| Affiliation: | (1.School of Mining,Guizhou University,Guiyang Guizhou 550025,China;2.Guizhou Coal Mine Design and Research Institute Co.,Ltd.,Guiyang Guizhou 550025,China) |
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| Abstract: | In order to prevent the secondary damage such as gas explosion caused by underground gas counterflow,and promote the safe production of coal mines,a model of gas counterflow migration and diffusion was established,and the similarity tests were used to study the laws of gas counterflow migration under the influence of different wind speeds and gas volumes.According to the roadway model of test system,the Fluent software was used to establish a geometric model to simulate the influence modes of different wind speeds and emission amounts on gas counterflow.The influence of two factors on the change of gas concentration at the same measuring point or time was observed,and the conclusions were verified with the past cases.The results showed that the conclusions of diffusion model and similarity tests could be verified in both directions.The gas concentration increased fast and decreased slowly during the process of gas counterflow.Both the wind speed and emission amount affected the gas counterflow migration.The higher the wind speed,the faster the gas counterflow speed.The smaller the peak gas concentration at the same location or time,the larger the gas emission amount,the shorter the first arrival time migrating to the same location,and the larger the peak gas concentration.It was verified that the research results were consistent with the actual cases. |
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| Keywords: | gas counterflow wind speed emission amount similarity test numerical simulation |
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