关键词: 扬尘机理, 尘源控制, 大气颗粒物（PM）, 监测指标, 空气附面层, 压差, 物理模型

Abstract: In light that little study has been made on the control of common dusting source and even less systematic study on dusting mechanism, it is put forward that it is of primary importance  to make clear the dusting mechanism so as to control the dust from its source. Analysis was made of the force acted on the dust particulates and the preliminary study on the physical model of the dusting mechanism of super-fine particulates was also conducted. The results indicate that the dusting of 1~ 10 μm particulates is effected by mechanical force, rising force and ixodynamics; several micron-fine dust particulates can be made from stillness to getting the velocity identical to that of the mainstream in only a momentary time. The dusting of particulates is extremely complex and varied.

Key words: Dusting mechanism, dust source control, Atmospheric particulate matter (pm), Monitoring index, Air boundary layer, Pressure difference, Physical mode