摘要
为了研究不同地铁环控系统站台的颗粒物污染情况,提出有效的控制策略,通过对北京地铁6号线和8号线的PM2.5和PM10的质量浓度进行实测分析,分别得出了不同系统站台颗粒物污染分布规律。结果表明,全高安全门系统的PM2.5浓度是屏蔽门系统的1.02~2.24倍,远高于屏蔽门系统浓度;并且当列车驶入时站台颗粒物浓度会显著增加,增长的百分比范围为9%~33%,其中全高安全门系统>屏蔽门系统>地上高架系统。相关性分析表明,地铁站内的PM2.5和PM10有极强的相关性(R2=0.995),说明PM2.5和PM10有着共同来源。对室外环境中的PM2.5与站内PM2.5的相关性测试表明,地上高架站台相关性>地下站台,说明地上高架站台更易受室外环境影响。因此针对不同的系统,应提出不同的控制策略以提高地铁空气品质。
In order to study the distribution of particulate matter pollution in different subway environment control systems and propose effective control strategies,an experimental study is carried out.Two subway lines(line No.6and line No.8)in Beijing are selected.To obtain the distribution regularities of particulate matter,the mass concentration of PM2.5and PM10in two metro lines are tested.Testing results show that mass concentration of PM2.5in the full-height exit system is 1.02-2.24times higher than that of the platform screen door system.Besides,the concentration of particulate in the platform increased significantly when the train went into the station.The percentage of the growth is 9%-33%with the full-height exit system>platform screen door system>elevated metro system.Furthermore,the correlation analysis shows that there is a strong correlation between PM2.5and PM10in subway station(R2=0.995),and therefore they have the same source.The correlation analysis between outdoor environment and PM2.5in station indicates that the ground station>the underground station,hence the ground station being much more influenced by outdoor environment.Therefore,for different metro systems,different control strategies should be proposed to improve the air quality.
作者
谷雅秀
王姣姣
谢静超
刘加平
潘嵩
王新如
GU Yaxiu;WANG Jiaojiao;XIE Jingchao;LIU Jiaping;PAN Song;WANG Xinru(School of Civil Engineering,Chang’an University,Xi’an 710061,China;School of Environmental Science and Engineering,Chang’an University,Xi’an 710054,China;School of Civil Engineering,Beijing University of Technology,Beijing 100022,China)
出处
《西安理工大学学报》
CAS
北大核心
2018年第1期55-60,共6页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(51578011)
关键词
PM2.5
PM10
地铁
环控系统
颗粒物污染分布
PM2.5
PM10
subway
environment control system
distribution of particulate matter
