| 掘进工作面不同瓦斯源爆炸过程的数值模拟 |
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| 引用本文： | 罗振敏,康晓锋,王涛,苏彬,贾月华.掘进工作面不同瓦斯源爆炸过程的数值模拟[J].煤矿安全,2020(1):166-170. |
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| 作者姓名： | 罗振敏 康晓锋 王涛 苏彬 贾月华 |
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| 作者单位： | ;1.西安科技大学安全科学与工程学院;2.陕西省工业过程安全与应急救援工程技术研究中心;3.西部矿井开采及灾害防治教育部重点实验室 |
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| 基金项目： | 国家重点研发计划资助项目(2017YFC0804702-5);国家自然科学基金资助项目(51674193);陕西省自然科学基础研究计划面上资助项目(2017JM5068) |
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| 摘 要： | 为研究独头巷道中不同瓦斯源对其爆炸过程的影响,运用数值仿真技术系统模拟不同瓦斯积聚长度及浓度对其爆炸特性的影响。结果表明:随着瓦斯积聚长度的增大,最大爆炸压力和最高爆炸温度均增大;最强压力波破坏的区段由巷道封闭端向开放端转移。瓦斯浓度在6%~10%范围内,最大爆炸压力随浓度的增大而增大;浓度超过10%后,最大爆炸压力随浓度的增大而减小;最高爆炸温度则一直随浓度在增大;反向稀疏波与正向冲击波多次相遇叠加而出现多个压力峰值。
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| 关 键 词： | 瓦斯爆炸 k-ε湍流模型 最大爆炸压力分布 压力震荡 温度分布 |
Numerical Simulation of Explosion Process of Different Gas Sources in Heading Face |
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| LUO Zhenmin,KANG Xiaofeng,WANG Tao,SU Bin,JIA Yuehua.Numerical Simulation of Explosion Process of Different Gas Sources in Heading Face[J].Safety in Coal Mines,2020(1):166-170. |
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| Authors: | LUO Zhenmin KANG Xiaofeng WANG Tao SU Bin JIA Yuehua |
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| Affiliation: | (College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Shaanxi Provincial Industrial Process Safety and Emergency Rescue Engineering Technology Research Center,Xi’an 710054,China;Key Laboratory for Western Mines Exploitation and Disaster Prevention of the Ministry of Education,Xi’an 710054,China) |
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| Abstract: | To investigate the influence of different gas sources on the explosion process in single heading roadway, numerical simulation technology system was used to simulate the effect of gas accumulation length and concentration on its explosion characteristics. The results showed that with the increasing of gas accumulation length, the maximum explosion pressure and maximum explosion temperature increased;the parts where the strongest pressure wave was destroyed transferred from the closed end of the roadway to the open end. The maximum explosion pressure increases with the increasing of gas concentration in the range of 6% to 10%. When the concentration exceeds 10%, the maximum explosion pressure decreases with the increase of concentration. The maximum explosion temperature increases with the concentration. The reverse sparse wave and the forward shock wave meet and superimpose for many times, resulting in multiple pressure peaks. |
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| Keywords: | gas explosion k-ε turbulence model maximum explosion pressure distribution pressure oscillation temperature distribution |
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