The Control Research Of PM10 And PM2.5 In The Process Of Highway Engineering Construction

PM10 and PM2.5 is the most basic and the most main two pollutions in the air pollution. With the rapid development of China’s economy and infrastructure, resulting in the construction project of PM10 and PM2.5 is becoming more and more serious, to adversely affect the ecological environment and human health. Up to now, has not system research produced for PM10 and PM2.5 in the highway engineering construction process, even not have Research Report of highway engineering construction the environmental pollution caused by construction of subgrade and pavement construction of different characteristics of each process to analyze the air pollution.In view of this situation, this paper built Shunyi District Shunan Road (Shuangxing Bridge-Changjin Road) as an example, starting from the characteristics of the subgrade and pavement construction in each stage of construction, combined with the local meteorological conditions in the process of construction, exploration in the highway engineering in each stage of construction of PM10 and PM2.5 emission intensity and concentration distribution, and put forward the corresponding pollution control measures in highway engineering.First of all, through data collection and field investigation of subgrade construction, analyzes the cause of subgrade construction of PM10 and PM2.5, and combining with the emission characteristics of each stage in the process of construction of Subgrade of PM10 and PM2.5, will be placed in 3 stages of subgrade construction process is divided into the filling, compaction and, respectively study the characteristics of all stages of the process in the construction of subgrade.Secondly, in order to USA EPA AP-42 recommended in the construction of "unit operations", emission factor method as the basis, propose methods to estimate calculation model in subgrade construction factor PM10 and PM2.5 emissions of each unit operation and each construction stage of emissions.Finally, in order to Shunan Road highway construction project, dust emission factors of each stage in the process of subgrade construction in each operational unit are respectively calculated, filling, compaction, the total amount of dust emissions placed stage and calculated, emissions results show:filling stages PM10 and PM2.5 emissions the most, the placement stage PM10 and PM2.5 emissions minimum, intermediate compaction stage PM10 and PM2.5 emissions between the two.This research method is conducive to the understanding of the PM10 and PM2.5 emission characteristics and emission of each unit road subgrade engineering operation, have a certain guiding significance for subgrade construction fugitive dust emissions source of quantitative calculation, provide a reference index of subgrade construction site PM10 and PM2.5 pollution for the supervision department, but also for estimating the degree of pollution of dust and to develop effective, suitable for local economic and technological conditions of dust pollution control measures to provide technical method.