基于交通流-HBEFA因子的典型路段排放特性研究——以深圳市为例  

Emission Characteristics of Typical Road Sections Based on Traffic Flow-HBEFA Emission Factor:A Case Study of Shenzhen

作　　者：朱永璇 何流 郭唐仪[1] ZHU Yong-xuan;HE Liu;GUO Tang-yi(School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学自动化学院,江苏南京210094

出　　处：《交通运输研究》2021年第4期67-74,84,共9页Transport Research

基　　金：国家重点研发计划政府间国际科技创新合作重点专项(2016YFE0108000)。

摘　　要：为了探究不同车辆排放对道路空气污染的贡献,以深圳市为例,基于道路运输排放因子手册(Handbook on Emission Factors for Road Transport,HBEFA)求取深圳本地化排放因子,结合深圳市典型道路实测交通流数据,计算该路段每小时CO,NOx平均排放因子和排放强度,以及不同车型机动车对路段CO,NOx的贡献率,并利用加利福尼亚线源扩散模型(California Line Sources Dispersion Model,CALINE4)对道路交通的污染排放进行模拟验证。结果表明:路段CO,NOx每小时单车排放因子分别为(1.04±0.71)g/km和(2.95±2.41)g/km,排放强度分别为(2664.27±1626.20)g(/km·h)和(7017.85±3382.99)g(/km·h),NOx排放强度日夜变化显著;大型货车约占总交通量的41%,其CO,NOx排放因子分别是小型客车的3~9倍和17~24倍,CO,NOx的路段贡献率分别是77.3%和92.9%;大型货车CO,NOx排放标准每提高10%或大型货车占比减少10%,该道路的CO,NOx排放分别减少约7.7%和9.3%。因此,提高大型货车排放标准、降低大型货车比例或是减少道路交通污染的有效途径。In order to explore the contribution of different vehicle emissions to road air pollution,taking Shenzhen as an example,the local emission factors of Shenzhen were calculated by using the handbook on emission factors for road transport(HBEFA).Combined with the measured traffic flow data of one typical road in Shenzhen,the hourly average emission factors and emission intensity of CO and NOx,as well as the contribution rate of different motor vehicles to the road section were calculated,and the road traffic pollution emission was simulated and verified by California line sources dispersion model(CALINE 4).The results show that:the hourly emission factors of CO and NOx are(1.04±0.71)g/km and(2.95±2.41)g/km respectively,and the emission intensity are(2664.27±1626.20)g/(km·h)and(7017.85±3382.99)g/(km·h)respectively;the emission intensity of NOx changes significantly day and night;large trucks account for 41%of the total traffic flow,and the emission factors of CO and NOx are 3~9 times and 17~24 times of those of small buses,and the contribution rates of CO and NOx of large trucks are 77.3%and 92.9%respectively.When the CO and NOx emission standards of large trucks are increased by 10%or the number of large trucks is reduced by 10%,the CO and NOx emissions of the road will be reduced by 7.7%and 9.3%respectively.Therefore,it could be an effective way to reduce road traffic pollution by improving the emission standard of large trucks or reducing the proportion of large trucks.

关 键 词：排放因子 贡献率 交通流 HBEFA 尾气扩散 

分 类 号：X511[环境科学与工程—环境工程] U491.92[交通运输工程—交通运输规划与管理]