Fractal Analysis of Spatial Distribution of Radon Exhalation Rates of Uranium Mill Tailings

Abstract:

A uranium mill tailings, located in Guangdong, was selected for spatial distribution of the radon exhalation rates measured by local static method. The two-dimension surface of radon exhalation rates was established by Surfer using the data of spatial distribution of radon exhalation rates measured at August 14, 2007 to 19 and 21, which was analyzed by fractal method of projective covering. The results show that the two-dimension surface of radon exhalation rates is of fractal structure. The fractal dimension of surface of radon exhalation rates from August 14, 2007 to 19 and 21 are 2.0535, 2.0173, 2.0029, 2.0084, 2.0079, 2.0057 and 2.0034, respectively, which indicates that the complexity of spatial distribution of the radon exhalation rates at 14 and 15 are larger than that of the other days. The phenomenon results from the change of precipitation and temperature, as well as the features of uranium mill tailings, including mineral composition, particle size, radium content, porosity and pore connectivity, etc.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 584-587
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.584
• Online since: May 2012
• Authors: Yan Shi Xie, Kai Xuan Tan, Liang Chen, Kai Guang Hu, Zheng Qing Wang, Xiu Cai Wang
• Keywords: Fractal, Local Static Method, Projective Covering Method, Radon Exhalation Rates, Uranium Mill Tailings

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