摘要
选取重庆市两江新区典型建筑施工工地,进行地基开挖阶段颗粒物(PM_(10)、PM_(2.5))排放监测,同步观测气象参数。探讨了该典型工地地基开挖阶段颗粒物的排放水平及与气象参数的相关性,并首次计算出重庆市建筑施工工地颗粒物排放因子。结果显示,该典型工地地基开挖阶段PM_(10)和PM_(2.5)净浓度范围分别为44.38~913.09μg/m^3和0.54~247.55μg/m^3,最高净浓度值分别为913.09μg/m^3和247.55μg/m^3,最大排放因子分别为0.029 g/(m2·h)和0.008 g/(m2·h)。PM_(10)与PM_(2.5)净浓度呈显著的正相关性,且PM_(10)对环境的贡献大于PM_(2.5),地基开挖阶段产生的颗粒物以PM_(10)为主。PM_(10)和PM_(2.5)净浓度受到气象条件的影响明显,其净浓度与风速、相对湿度呈显著的正相关,与温度呈弱相关。
In this paper, the typical construction site in Liangjiang New Area of Chongqing was taken as the target. Its emission concentration of particles （PM10, PM2.5） had been monitored in the foundation excavation stage, and the meteorological parameters had been observed simultaneously. The correlation between particle emission levels and meteorological parameters was discussed, and the emission factors of the typical construction site had been calculated. The results showed that net concentration range of PM10 and PM2.5 were 44.38 -913.09μg/m^3,0.54-247.55 μg/m^3 during the foundation excavation stage of the typical construction site ,the highest net concentration of PM10 and PM2.5 were 913.09 μg/m^3 and 247. 55μg/m^3 and the maximum emission factors of PM10 and PM2.5 were 0.029 g/（ m^2·h） , 0.008 g/（ m^2·h）, respectively. The PM10 was positively correlated with the net concentration of PM2 5 , and the contribution of PM 10 to environment was greater than that of PM2.5, and the PM10 was the main particle in the foundation excavation stage. The net concentration of PM10 and PM2.5 was significantly affected by meteorological conditions. It was positively correlated with wind speed and relative humidity, and weakly correlated with temperature.
出处
《环境影响评价》
2017年第1期80-85,共6页
Environmental Impact Assessment
