Predictive analysis of shaft station radon concentrations in underground uranium mine: A case study.
This paper presented a method for predicting shaft station radon concentrations in a uranium mine of China through theoretical analysis, mathematical derivation and Monte-Carlo simulation. Based upon the queuing model for tramcars, the average waiting time of tramcars and average number of waiting tramcars were determined, which were further used in developing the predictive model for calculating shaft station radon concentrations. The results exhibit that the extent of variation of shaft station radon concentration in the case study mine is not significantly affected by the queuing process of tramcars, and is always within the allowable limit of 200 Bq m(-3). Thus, the empirical limit of 100,000 T annual ore-hoisting yields has no value in ensuring radiation safety for this mine. Moreover, the developed model has been validated and proved useful in assessing shaft station radon levels for any uranium mine with similar situations.
School of Resources and Safety Engineering, Central South University, Changsha 410083, China.
Guoyan
G
Zhao
School of Resources and Safety Engineering, Central South University, Changsha 410083, China. Electronic address: hongchangshou@163.com.
Changshou
C
Hong
School of Environmental Protection and Safety Engineering, University of South China, Hengyang 421001, China.
Xiangyang
X
Li
School of Resources and Safety Engineering, Central South University, Changsha 410083, China.
Chunping
C
Lin
Beijing Research Institute of Chemical Engineering and Metallurgy, China National Nuclear Corporation, Beijing 101149, China.
Penghua
P
Hu
D000396:Air Pollutants, Radioactive / Q000032:analysis*; D003198:Computer Simulation; D008906:Mining; D008962:Models, Theoretical; D009010:Monte Carlo Method; D011834:Radiation Monitoring; D011886:Radon / Q000032:analysis*; D014501:Uranium
D000396:Air Pollutants, Radioactive; D014501:Uranium; D011886:Radon
Predictive model; Queuing theory; Radon contamination; Shaft station; Underground uranium mine