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国内外对于隧道通风问题的研究,大多忽视了短距离连续隧道污染空气的窜流问题;在连续隧道通风设计时,通常也不做特殊处理。因此,对通风窜流问题展开深入研究显得尤为迫切和必要。基于此,首先采用Fluent软件对短距离连续隧道通风系统进行数值模拟,提出窜流比这一全新概念;并利用Origin8.0软件对模拟结果进行分析、揭示规律,拟合窜流比计算式;在此基础上提出连续隧道通风设计校核标准;最后通过实例对校核标准进行应用说明。窜流比及校核标准的提出为隧道群中短距离连续隧道通风设计更加可靠提供了参考依据。
Domestic and international research on tunnel ventilation mostly neglects the problem of channeling of air polluted by short-distance continuous tunnels. In continuous tunnel ventilation design, no special treatment is usually done. Therefore, it is urgent and necessary to conduct in-depth research on ventilation channeling problems. Based on this, Fluent software is firstly used to simulate the short-distance continuous tunnel ventilation system and a new concept of channeling ratio is proposed. The simulation results are analyzed by Origin 8.0 software to reveal the law and fit the calculation formula of channeling ratio. On this basis, put forward the continuous tunnel ventilation design verification standards; Finally, through the example of the application of the verification standards. The proposed method of channeling flow ratio and checking standard provides a reference for more reliable ventilation design of short-distance continuous tunnel in tunnel group.