Study on Discharge and Diffusion of Raised Dust during Subgrade Construction in the Yellow River Flood Area
The construction process of subgrade construction was divided into several operating units：oil material loading and unloading, vehicle transportation and wind erosion dust. For each operational unit during each stage of subgrade construction, different Gaussian diffusion models were chosen respectively according to the transmission and diffusion of raised dust from different source (point source, line source and area source). Finally, based on one contract section on a freeway in the Yellow River flood area, the concentration distribution was calculated using atmospheric estimation software in different pattern of point source, line source and area source. It was shown that with the increasing of distance, point source and area source emission increased to the maximum value and then decreased to the stable value, while line source emission presented a distribution pattern which changed decreasingly.
Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du
Z. Y. Yao et al., "Study on Discharge and Diffusion of Raised Dust during Subgrade Construction in the Yellow River Flood Area", Advanced Materials Research, Vols. 374-377, pp. 759-763, 2012