地下交通联系隧道通风量分区计算方法
Zoning calculation method of ventilation rate in underground traffic linked tunnels
摘要：
根据交通流模式不同，将地下交通联系隧道分为地下车库联系隧道和旅客输运联系隧道2类。总结了现有地下车库和公路隧道的通风量计算方法，发现由于基准排放因子的取值不同，PIARC 2012计算的CO排放量仅为细则2014计算值的7%~20%。根据车队、人员运动特征，提出了地下交通联系隧道污染物分区浓度限值，即非连续交通区和连续交通区CO设计质量浓度分别取30，86 mg/m3，并以PIARC 2012中的计算方法为基础，提出了通风量分区计算方法。以哈尔滨西火车站为例进行了计算，结果表明：连续交通区根据坡度不同，换气次数为4~6 h-1左右；落客区车辆密集，所需换气次数为15 h-1左右；蓄车区虽然单车CO排放量较高，但单车所占面积较大，其换气次数并未提高很多，约为4 h-1。
Abstract：
According to the different patterns of traffic flow, divides underground traffic linked tunnels into underground garage connected tunnels and passenger transport linked tunnels. By summarizing the current calculation methods of ventilation rate for underground garages and highway tunnels, finds that the calculated CO emission based on PIARC 2012 is only 7% to 20% of the values based on the detailed Rule 2014 due to the different baseline emission factors. According to the movement characteristics of vehicle and people, proposes the concentration limits of air pollutant based on division in underground traffic linked tunnels. To be specifically, the CO design mass concentrations of discontinuous and continuous traffic areas are 30 and 86 mg/m3, respectively. Proposes a zoning calculation method of ventilation rate on the basis of calculation method in PIARC 2012. Taking the Harbin West Railway Station as an example, the calculation results show that the air change rate in the continuous traffic area is about 4 to 6 h-1 depending on slopes, while for alighting area with heavy traffic, the value is about 15 h-1. As for the storage garage, although there exists a high CO emission per vehicle, the air change rate is not significantly increased since each vehicle occupies a relatively large area, remained at 4 h-1.
Keywords:undergroundtrafficlinkedtunnel,ventilationrate,discontinuoustrafficarea,continuoustrafficarea,zoningcalculation