主体结构施工阶段扬尘监测与规律分析

为了了解建筑工程主体结构阶段的扬尘排放特点,掌握该阶段的扬尘分布规律以加强污染防控,改善施工作业环境。选取北京市两个典型住宅建设项目,以总悬浮颗粒物浓度作为监测指标,使用粉尘采样仪对主体结构施工阶段的各项施工活动进行扬尘浓度实地监测,汇总得到大量扬尘浓度原始数据。通过对比不同施工活动的扬尘污染状况,分析扬尘排放特点及主要分布规律。结果表明:主体结构施工阶段整体扬尘污染并不严重,不同施工活动排放的扬尘浓度存在明显差异,木工棚和道路两侧是扬尘污染严重区域。

Field Dust Monitor and Distribution Analysis During the Main Structure Construction

Activities in main structure construction stage generate large amounts of fugitive dust,bringing damage to city environment and workers＇ health. In order to propose effective control measures to improve the working environment and protect the field workers from harmful dust inhaling,it is of great significance to monitor construction dust emission and make distribution analysis. With two typical residences in Beijing as case samples,total suspended particulates concentration as monitoring index and dust sampling meter as monitoring equipment,this paper measures the dust pollution of different kinds of construction activities in main structure construction stage and finally gets plenty of original data of dust concentration. The data comparison and analysis show that the entire construction dust pollution in main structure construction stage isn＇t terrible,but the fugitive dust concentrations in timber processing zone and road sides turn out much higher than that in other regions. Besides,there are obvious differences of dust pollution among various construction activities.