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자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제50권 제3호
발행연도
2018.1
수록면
452 - 461 (10page)

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Shaft stations of underground uranium mines in China are not only utilized as waiting space forloaded mine-cars queuing to be hoisted but also as the principal channel for fresh air taken to workingplaces. Therefore, assessment of how mine-car queuing processes affect shaft station radon concentrationwas carried out. Queuing network of mine-cars has been analyzed in an underground uraniummine, located in Quzhou, Zhejiang province of Eastern China. On the basis of mathematical analysis ofthe queue network, a MATLAB-based quasi-random number generating program utilizing Monte-Carlomethods was worked out. Extensive simulations were then implemented via MATALB operating on aDELL PC. Thereafter, theoretical calculations and field measurements of shaft station radon concentrationsfor several working conditions were performed. The queuing performance measures of interest,like average queuing length and waiting time, were found to be significantly affected by theutilization rate (positively correlated). However, even with respect to the “worst case”, the shaftstation radon concentration was always lower than 200 Bq/m3. The model predictions were comparedwith the measuring results, and a satisfactory agreement was noted. Under current working conditions,queuing-induced variations of shaft station radon concentration of the study mine are notremarkable.

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