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目的调查轨道交通地下车站内环境的卫生状况和污染特征。方法通过春、夏、冬不同季节及早、中、晚不同时间段对某轨道交通地下车站内空气质量及集中空调通风系统进行检测,从而了解轨道交通内污染物的分布情况及影响相关指标的主要因素。结果地下车站内二氧化碳检测结果为0.031~0.218 mg/m~3、可吸入颗粒物检测范围为0.023%~0.158%、空气细菌数检测范围为5~7个/皿;在不同季节和不同时间段对轨道交通地下车站的环境质量有直接影响,地下车站集中空调通风系统的卫生指标在不同季节对轨道交通地下车站的环境质量有直接影响。结论地铁车站的环境质量存在着一些问题,今后的地铁卫生管理应加强新风供给,优化新风口的设置,并加强对集中空调通风系统的卫生管理来改善轨道交通地下车站的空气质量。
Objective To investigate the hygienic conditions and pollution characteristics of the environment within the underground station of rail transit. Methods The air quality and central air-conditioning and ventilation systems in underground stations of a rail transit were detected through spring, summer and winter seasons and at different time periods in early, middle and late nights so as to understand the distribution of pollutants in rail transit and the main influential indexes factor. Results The detection results of carbon dioxide in underground stations were 0.031 ~ 0.218 mg / m ~ 3, the detection range of respirable particulate matter was 0.023% ~ 0.158%, the detection range of bacteria in air was 5 ~ 7 pcs per dish. In different seasons and at different time The environmental quality of the underground station of rail transit has a direct impact. The hygienic index of the centralized air conditioning and ventilation system of the underground station has a direct impact on the environmental quality of the underground station at the rail transit in different seasons. Conclusion There are some problems in the environmental quality of metro stations. In the future, metro health management should strengthen the supply of fresh air, optimize the setting of fresh air outlets, and strengthen the hygiene management of centralized air conditioning and ventilation systems to improve the air quality of underground stations at rail transit.