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以某长大高速公路隧道为例,结合我国隧道通风设计规范JTJ026.1-1999与PIARC2007标准(世界道路协会),针对不同行车速度,不同车辆更新情况、不同排放标准组合形式以及是否考虑NOx等情况,对各个不同工况的需风量分别进行计算,并从需风量计算方法、机动车排放量和污染物设计浓度三个方面对隧道需风量差异进行分析。研究结果表明:我国设计规范与PIARC2007存在较大差距,为了适应当前及今后我国交通量及机动车排放特点的发展趋势,我国现行规范应在机动车排放量、污染物设计浓度限值等方面做出必要改进以达到合理确定隧道需风量的目的。
Taking a large highway tunnel as an example, considering the tunnel ventilation design specifications JTJ026.1-1999 and PIARC2007 (World Road Association) of our country, according to different driving speeds, different vehicle renewal conditions, different emission standard combination forms and whether to consider NOx Situation, the need for each of the different working conditions were calculated, and from the need to calculate the amount of air emissions, vehicle emissions and pollutant design concentration of the three aspects of the tunnel need to analyze the difference between the amount of air. The results show that there is a big gap between China’s design codes and PIARC2007. In order to meet the current and future development trend of China’s traffic and vehicle emission characteristics, China’s current norms should be in the motor vehicle emissions, pollutant concentration limits and other aspects of design The necessary improvements in order to achieve a reasonable purpose of determining the amount of air required by the tunnel.