Radon migration in finite-thickness particle-packing emanation media
Radon migration in finite-thickness particle-packing emanation media
复制标题
有限厚度颗粒填充发射介质中的氡迁移
DOI：
10.1007/s10967-020-07095-8
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发表时间：
2020-03
影响因子：
1.6
通讯作者：
Guangling Chen
中科院分区：
文献类型：
--
作者：
Yongjun Ye;Wei Liu;Chunhua Huang;Tao Liang;Shengyang Feng;Guangling Chen
A particle-packing emanation media consists of ore particles with varying size and shape commonly existing in the stopes and the blind roadways of underground uranium mines, from which exhaled radon poses a health hazard to mining personnel. Dynamic equations of radon release-diffusion-seepage migration in finite-thickness particle-packing emanation media were established in this study based on the individual ore model. Calculation equations for radon exhalation rate and proportion of the media under two different kinds of migration mechanisms (drived by seepage-diffusion or only by seepage) were deduced and the results were utilized to explore the influence of media thickness, diffusion coefficient, and equivalent media particle size on radon exhalation. The results show that radon exhalation rate along the direction of seepage flow first sharply increases, then slightly increases with the equivalent velocity of seepage (dimensionless) increases from 0 to 20, whereas the opposite is the case for the reverse direction of seepage flow radon; the total radon exhalation rate increases with the thickness of media and the seepage velocity increase. The results also show that radon exhalation proportion is significantly influenced by equivalent particle size under a small diffusion coefficient. These findings can be used as references for ventilation design to reduce radon concentration level in the stopes of underground uranium mine.
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DOI：
10.1016/j.scitotenv.2016.04.131
发表时间：
2016-09
期刊：
The Science of the total environment
影响因子：
--
作者：
L. Minkin;A. S. Shapovalov
通讯作者：
L. Minkin;A. S. Shapovalov
影响因子：
2.2
作者：
ROGERS, VC;NIELSON, KK
通讯作者：
NIELSON, KK
影响因子：
2.3
作者：
P. Sahu;D. P. Mishra;D. Panigrahi;V. Jha;R. Patnaik
通讯作者：
P. Sahu;D. P. Mishra;D. Panigrahi;V. Jha;R. Patnaik
DOI：
10.1016/j.scitotenv.2006.02.043
发表时间：
2006-08
期刊：
The Science of the total environment
影响因子：
--
作者：
J. Somlai;Z. Gorjánácz;A. Várhegyi;T. Kovács
通讯作者：
J. Somlai;Z. Gorjánácz;A. Várhegyi;T. Kovács
影响因子：
2.3
作者：
N. Ryzhakova
通讯作者：
N. Ryzhakova