Experimental study of the effect of seepage on radon exhalation in circular tubular porous emanation media
Experimental study of the effect of seepage on radon exhalation in circular tubular porous emanation media
复制标题
圆管状多孔发散介质渗流对氡析出影响的实验研究
DOI：
10.1177/1420326x19861781
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发表时间：
2020-06
影响因子：
3.6
通讯作者：
Kearfott Kimberlee J
中科院分区：
文献类型：
--
作者：
Ye Yongjun;Wu Wenhao;Huang Chunhua;Kearfott Kimberlee J
天然存在于许多岩石中的镭，衰变为放射性气体氡，然后从地下隧道和其他地下建筑物的表面呼出，是人类暴露于放射性的主要来源。根据氡在多孔射气介质（如人工挡土墙及其周围岩石）中的渗流扩散迁移理论，建立了氡在圆管射气介质中迁移的数学模型。得到了稳态条件下氡浓度分布的解析解和氡析出率的计算公式。设计了一套实验装置，用于测量不同压力梯度下氡析出率。氡析出率和氡析出总量的理论计算值与实验结果吻合较好。低压侧氡析出率随渗流速度（压差）的增大而增大，而高压侧氡析出率则相反。氡析出总量随时间的增加而增加，并趋于最大值。
Radium, which is naturally present in many rocks, decays to the radioactive gas radon, which is then exhaled from the surface of underground tunnels and other underground buildings and is a major source of human exposure to radioactivity. A mathematical model for the migration of radon from a circular tubular emanation medium was established based on the seepage–diffusion migration theory for radon in porous emanation media, such as artificial retaining walls and the surrounding rocks in these locations. An analytical solution for the distribution of radon concentrations and the calculation formula for the radon exhalation rate under steady-state conditions were then obtained. An experimental device was designed to determine the radon exhalation rate under different pressure gradients. The theoretical calculation values for the radon exhalation rate and the total amount of radon exhalation are in good agreement with the experimental results. The radon exhalation rate at the low-pressure side increases with an increase in seepage velocity (pressure difference), while the radon exhalation rate at the high-pressure side is on the contrary. The total amount of radon exhalation increased over time with an increase in the seepage velocity and tended towards a maximum value.
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影响因子：
7.4
作者：
Chao, CYH;Tung, TCW;Burnett, J
通讯作者：
Burnett, J
影响因子：
--
作者：
S. Schery;D. Gaeddert;M. Wilkening
通讯作者：
S. Schery;D. Gaeddert;M. Wilkening
DOI：
10.1016/j.scitotenv.2018.04.401
发表时间：
2018-10
期刊：
The Science of the total environment
影响因子：
--
作者：
Le Chi Hung;J. Goggins;Marta Fuente;M. Foley
通讯作者：
Le Chi Hung;J. Goggins;Marta Fuente;M. Foley
DOI：
10.1016/0969-8078(93)90097-n
发表时间：
1993
期刊：
Nuclear Tracks and Radiation Measurements
影响因子：
--
作者：
J. Morin;J. Seidel;M. Monnin
通讯作者：
J. Morin;J. Seidel;M. Monnin
影响因子：
--
作者：
D. Ting
通讯作者：
D. Ting