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一座单线内燃机车牵引运营隧道是否需要进行机械通风;机械通风效果如何评价;风机最佳启动时间和通风时间的长短如何确定是运营隧道机械通风效果的卫生学评价要解决的问题。本文参照TB1912—87《铁路运营隧道空气中内燃机车废气容许浓度》标准,阐明不同隧道污染水平调查如何选择采样点;如何采样并对测定结果进行评价以确定通风程序。
How to evaluate the effect of mechanical ventilation, how to determine the optimal starting time and the ventilation time of a single-line diesel locomotive traction operation tunnel is the problem to be solved in the hygienic evaluation of the tunnel ventilation effect. In this paper, we refer to TB1912-87 “Exhaust Gas Allowable Concentration for Diesel Locomotives in Railway Tunnels” to clarify how to choose sampling points for different tunnel pollution level surveys and how to sample and determine the measurement results to determine ventilation procedures.