Study on Discharge and Diffusion of Raised Dust during Subgrade Construction in the Yellow River Flood Area

Zhan Yong Yao; Kai Yao; Pei Zhi Zhuang; Kai Zhang

doi:10.4028/www.scientific.net/AMR.374-377.759

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 374-377Study on Discharge and Diffusion of Raised Dust...

Study on Discharge and Diffusion of Raised Dust during Subgrade Construction in the Yellow River Flood Area

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 374-377)

Pages:

759-763

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.374-377.759

Citation:

Cite this paper

Online since:

October 2011

Authors:

Zhan Yong Yao, Kai Yao, Pei Zhi Zhuang, Kai Zhang

Keywords:

Concentration, Operating Unit, Raised Dust, Subgrade Construction

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