关于城市大型工程建设对大气颗粒物的影响及减排措施.DOC

城市大型工程建设对大气颗粒物的影响及减排措施研究 周 平1，谢子洋1，林荔敏2，黄 涛3* （西南交通大学 1．土木工程学院；2．外国语学院；3．地球科学与环境工程学院，四川 成都 610031） 摘 要：本文结合成都市二环路改造工程对附近区域在改造前后的空气质量状况和大气颗粒物水平进行了研究。研究工作在于：首先通过问卷调研了解了附近居民对改造工程所带来的环境及生活影响的看法，再运用高斯扩散—沉积模式并结合房室模型对大气颗粒物时间和空间的变化规律进行了数值模拟，然后通过改进模糊层次分析法选出最优科学方案，为日后城市大型工程的建设提供经验借鉴，最后结合相关文献分析计算其实际能减少大气颗粒物排放的数量。研究表明，二环路改造工程使得成都市中心城区的大气颗粒物浓度迅速增加，成为近一年来成都市空气质量较差的主要原因之一，而采取相关的节能减排措施既能在一定时间内有效地减少大气颗粒物的浓度，又能统筹协调经济建设、环境保护和社会发展三者的关系。 关键词：大气颗粒物；高斯扩散—沉积模式；房室模型；改进模糊层次分析法 Influence of Major Urban Construction on Atmospheric Particulates and Emission Reduction Measures Zhou Ping 1, Xie Ziyang 1, Lin Limin 2, Huang Tao 3* （1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China 2 School of Foreign Language College, Southwest Jiaotong University, Chengdu 610031, China 3*Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China） Abstract：In order to understand the variation of air quality and the concentration of atmospheric particulates in Chengdu Second Ring Road renovation project, this paper starts to investigate the surrounding residents’ opinions on the influenced environment and their daily lives via questionnaires. Then the study numerically simulates the change rule of atmospheric particulates in terms of time and space by using the Gaussian dispersion-deposition model and the compartment model. The optimized scientific scheme is selected by the improved fuzzy analytical hierarchy process (FAHP) to help decision making for the future urban reconstructions. Finally, the reduced emissions of atmospheric particulates are measured when the improvement scheme is provided. According to the study, it can be concluded that the concentration of atmospheric particulates increases rapidly in central Chengdu city during the renovation project, which results in worsening air quality in Chengdu during March 2012 to March 2013. Taking related measures on energy saving and emission reduction can effectively reduce the