| 巷道分岔角度对火灾烟气蔓延的影响数值模拟 |
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| 引用本文： | 薛彦平. 巷道分岔角度对火灾烟气蔓延的影响数值模拟[J]. 煤矿安全, 2020, 51(6): 179-183 |
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| 作者姓名： | 薛彦平 |
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| 作者单位： | 煤科集团沈阳研究院有限公司,辽宁沈阳110016;煤矿安全技术国家重点实验室,辽宁抚顺113122 |
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| 基金项目： | “十三五”大型油气田及煤层气开发科技重大专项资助项目 |
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| 摘 要： | 为了研究巷道分岔对烟气蔓延至回风大巷温度、压强以及风速的影响,基于Pyrosim火灾模拟软件,模拟了回风斜巷和回风大巷交汇形式以及巷道分岔角对烟气蔓延的影响。结果表明:当vg(工作面风速)h(回风巷风速)时,随着回风斜巷分岔角度的增加,回风巷道的压强呈现出"U"形;当vg=vh时,回风斜巷分岔角对回风大巷风速的影响与vgh结果相反,分岔角为30°时风速波动影响最小,分岔角为60°风速波动影响最大;回风大巷内温度波动值随着回风斜巷分岔角的增加而减弱。
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| 关 键 词： | 分岔角度 煤矿火灾 烟气蔓延 数值模拟 压强 |
Numerical Simulation of Effect of Tunnel Diverging Angles on Fire Smoke Flow |
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| XUE Yanping. Numerical Simulation of Effect of Tunnel Diverging Angles on Fire Smoke Flow[J]. Safety in Coal Mines, 2020, 51(6): 179-183 |
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| Authors: | XUE Yanping |
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| Affiliation: | (China Coal Technology and Engineering Group Shenyang Research Institute,Shenyang 110016,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China) |
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| Abstract: | To research the influence of diverging angles on the temperature,pressure and wind speed of smoke flow on the return airway,this paper simulates the influence of the return airway and return inclined roadway intersections and diverging angles on flue gas propagation based on Pyrosim.The results show that when vg
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| Keywords: | diverging angles fire in coal mine smoke flow numerical simulation pressure |
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