基于液气相变吸热的深井掘进工作面降温数值模拟
Numerical Simulation on Heading Face Cooling of Deep Coal Mine Based on Liquid-gas Phase Transition Technology
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摘要: 在总结国内外矿井热害控制研究的基础上，针对深部高温矿井掘进工作面范围小、人员少、需冷量少，但热害严重的特点，提出了方便可行的液气相变吸热降温方法。运用数值模拟软件ANSYS FLUENT进行了液气相变吸热控制掘进面温度的数值模拟研究。结果表明：掘进工作面温度T随喷射时间t的增加呈负对数规律T=-aln（ｔ）+b降低，随喷射液滴直径d的减小呈对数规律T=aln（ｄ）+b降低，随喷射流量Q的增大呈线性规律T=-aQ+b降低。Abstract: On the basis of summarizing the research on thermal control of mine at home and abroad, we propose a convenient and feasible method of liquid-gas phase transition cooling technology in view of the characteristics of small range of heading face, fewer workers, less cold requirement, and the serious heat damage in deep coal mine heading face. Numerical simulation software ANSYS FLUENT is used to carry out numerical simulation of using liquid gas phase transition to control the temperature of the tunneling surface. The results showed that: the temperature of the heading face （Ｔ） decreased with the increase of the injection time （ｔ）, and they were in negative logarithm of T=-aln （t） +b; as the diameter of the spray droplet decreased, the temperature （Ｔ） had a logarithmic relationship with diameter （ｄ） of T=aln（ｄ）+b; the temperature （Ｔ） presented linearly decrease of T=-aQ+b with the increase of jet flow （Ｑ）.
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Keywords:
- deep well /
- heading face /
- cooling /
- liquid-gas phase transition /
- numerical simulation
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[1] 何满潮,郭平业.徐州矿区深部开采热害治理现场试验研究[J].煤炭工程,2015(4):1-4. [2] 张亚平,王美,郝改红.矿井降温除湿系统的热力学分析[J].煤炭技术,2016(10):146-148. [3] 孙希奎,李学华,程为民.矿井冰水冷辐射降温技术研究[J].采矿与安全工程学报,2009,26(1):105-109. [4] 何满潮,郭平业.深部岩体热力学效应及温控对策[J].岩石力学与工程学报,2013,32(12):2377-2393. [5] Qi Ping,He Manchao, Meng Li, et al. Working Principle and application of HEMS with lack of cold source[J].Mine Science and Technology,2010,20(1):433-438. [6] 何满潮,涂敏.HEMS深井降温系统研发及热害控制对策[J].岩石力学与工程学报,2008,27(7):1353. [7] 李刚,吴超.超声干雾抑尘机理及其技术参数优化研究[J].中国安全科学学报,2015,25(3):108-113. [8] 朱谷君.工程传热传质学[M].北京:航空工业出版社,1989. [9] 张连昆,王珏,谢耀社,等.高温矿井极细雾粒相变降温技术模拟研究[J].煤炭工程,2013(12):97-99. [10] 柴博森,项玥,马文星,等.制动工况下液力偶合器流场湍流模型分析与验证[J].农业工程学报,2016(3):34-40.
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