| 成都市施工扬尘排放特征研究 |
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| 引用本文： | 范武波,陈军辉,唐斌雁,冯小琼,孙海龙,张懿,王杰,金晨阳,骆丽红,蒋涛,吴锴,孙蜀,姜涛,钱骏,刘政.成都市施工扬尘排放特征研究[J].中国环境科学,2020,40(9):3767-3775. |
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| 作者姓名： | 范武波 陈军辉 唐斌雁 冯小琼 孙海龙 张懿 王杰 金晨阳 骆丽红 蒋涛 吴锴 孙蜀 姜涛 钱骏 刘政 |
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| 作者单位： | 1. 四川省生态环境科学研究院, 四川 成都 610041;2. 四川大学新能源与低碳技术研究院, 四川 成都 610207;3. 四川大学水利水电学院, 水力学与山区河流开发保护国家重点实验室, 四川 成都 610065;4. 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225 |
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| 基金项目： | 国家重点研发计划项目（2016YFC0206005） |
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| 摘 要： | 采用DustTRAK TM气溶胶（粉尘）监测仪对成都市112个不同类别的房建、市政工地施工扬尘进行测试，研究了不同类别施工扬尘的排放特征，分析了下风向扬尘浓度的变化趋势，并采用CALPUFF对成都市新都区某建筑工地的排放进行了模拟.结果表明：（1）成都市施工扬尘排放浓度约为0.13~2.91mg/m3，其中房建类施工平均浓度约为0.94mg/m3，高于市政施工；大型工地扬尘平均浓度约为0.61mg/m3，低于中型和小型工地；土方施工阶段平均浓度约为1.21mg/m3，远高于地基建设、主体建设、装饰阶段.（2）成都市施工扬尘呈现出高低浓度交替的周期性变化，其中房建工程土方施工阶段的高低浓度差值可达到0.6mg/m3以上.（3）施工扬尘在场界外下风向5~15m范围内会出现浓度增加的趋势，随后逐渐下降，在50m附近逐渐趋于稳定，稳定浓度介于0.1~0.2mg/m3.（4）CALPUFF模型能较好地从宏观角度来模拟成都地区施工扬尘的扩散趋势，但难以捕捉施工扬尘在下风向近距离的扩散特征.
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| 关 键 词： | 施工扬尘 排放特征 下风向 CALPUFF |
| 收稿时间： | 2020-02-09 |
Dust emission characteristics of construction activities in Chengdu |
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| FAN Wu-bo,CHEN Jun-hui,TANG Bin-yan,FENG Xiao-qiong,SUN Hai-long,ZHANG Yi,WANG Jie,JIN Chen-yang,LUO li-hong,JIANG Tao,WU Kai,SUN Shu,JIANG Tao,QIAN Jun,LIU Zheng.Dust emission characteristics of construction activities in Chengdu[J].China Environmental Science,2020,40(9):3767-3775. |
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| Authors: | FAN Wu-bo CHEN Jun-hui TANG Bin-yan FENG Xiao-qiong SUN Hai-long ZHANG Yi WANG Jie JIN Chen-yang LUO li-hong JIANG Tao WU Kai SUN Shu JIANG Tao QIAN Jun LIU Zheng |
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| Institution: | 1. Sichuan Academy of Environment Sciences, Chengdu 610041, China;2. Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu 610207, China;3. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resources and Hydropower, Sichuan University, Chengdu 610065, China;4. Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmosphere Sciences, Chengdu University of Information Technology, Chengdu 610225, China |
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| Abstract: | Based on dust emission monitoring data from 112 construction sites including various types of buildings and municipal engineering sites in Chengdu with Dust TRAK TM aerosol (dust) monitor, the emission characteristics of different construction sites and their downwind dust concentration trend were studied. Additionally, the CALPUFF software was used to simulate the diffusion characteristics of one construction site in Xindu District of Chengdu. The results showed that the dust emission concentration ranged between 0.13 and 2.91mg/m3 in Chengdu. The average dust concentration at house construction sites was 0.94mg/m3, which was higher than that at municipal construction sites. The dust concentration at medium and small construction sites was higher than the average concentration of 0.61mg/m3 at large construction sites. The average dust concentration at earthwork construction phase was about 1.21mg/m3, which was much higher than those at the foundation construction, main construction, and decoration phases. The dust emission concentration showed a periodic alternation between high and low in Chengdu. The maximum difference between high and low concentration at the earthwork construction phase reached 0.6mg/m3. The dust concentration increased in the 5 to 15m downwind area of the plant boundary, and then decreased to a stable level (0.1~0.2mg/m3) at the distance around 50m. The CALPUFF model showed the capacity to simulate the diffusion trend of construction dust in Chengdu from the macro perspective, however it was still a challenge to capture the detailed diffusion characteristics of construction dust in the downwind direction. |
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| Keywords: | construction dust emission characteristics downwind direction CALPUFF |
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