基于城市地下道路污染物排放特性的交通特征调研

城市地下道路的建设可有效缓解日益拥挤的城市交通状况,然而交通特征使得机动车污染物排放不能简单照搬已有公路设计规范.有效把握城市地下道路内机动车主要污染物的排放特性,对城市地下道路通风系统的设计标准以及设计方法的确定具有非常重要的指导意义.以北京、上海作为一类代表城市,武汉、南京、广州作为二类代表城市,通过对机动车保有量、车型比例、交通流量、车速等参数的调查研究,分析得出不同城市交通特征对地下道路污染物排放因子的影响.结果能够为进一步确定排放因子以及污染物排放量计算方法提供依据,为隧道通风设计奠定基础.

Traffic Characteristics Based on Vehicle Emission Factors in Urban Underground Road

The construction of urban underground road can effectively alleviate the increasingly crowded urban traffic conditions.But due to urban traffic characteristics,the treatment of vehicle emissions cannot simply copy the existing highway design code.Grasping the emission characteristics of the major pollutants of motor vehicles in the urban underground road has a very important guiding significance to urban tunnel ventilation system design criteria and design method.Taking the first tier cities like Beijing and Shanghai and the second tier cities like Wuhan,Nanjing and Guangzhou as objects,through inspecting the motor vehicle population,vehicle type,traffic flow,speed and other parameters,the influences of different urban traffic characteristics on the vehicle emission factors were analysed.The results can provide the basis for the further determination of pollutant emission factors and lay down the foundation for the tunnel ventilation design.