含氡放射性水体氡析出规律的理论研究

辐射防护 ›› 2017, Vol. 37 ›› Issue (1): 56-61.

含氡放射性水体氡析出规律的理论研究

叶勇军^1,2, 代鑫涛¹, 丁德馨², 江俊廷¹, 李志¹

1.南华大学环境保护与安全工程学院, 湖南衡阳 421001;
2.南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳 421001

收稿日期:2016-03-11 出版日期:2017-01-20 发布日期:2021-11-11
作者简介:叶勇军(1979—),男,2002年毕业于南华大学建筑环境与设备工程专业,2005年毕业于南华大学供热供燃气通风及空调工程专业,获硕士学位,2015年毕业于南华大学采矿工程专业,获工学博士学位,副教授。E-mail:yongjunye@163.com
基金资助:
国家自然科学基金面上项目(11575080,111050609);国家安全生产监督管理总局安全生产重大事故防治关键技术科技项目(hunan-0015-2015AQ);南华大学博士科研启动基金(2015XQD38);南华大学研究生科研创新项目(2015XCX31)。

Theoretical study on law of radon exhalation in radioactive water containing radon

Ye Yongjun, Dai Xintao, Ding Dexin, Jiang Juntin, Li Zhi

School of Environmental Protection and Safety Engineering, University of South China, Hunan Hengyang 421001

Received:2016-03-11 Online:2017-01-20 Published:2021-11-11

摘要/Abstract

摘要： 利用氡扩散运移理论,建立了水体内氡迁移的一维微分方程,推导了水中氡浓度及水体表面氡析出率的计算公式;研究了水底射气介质氡析出率、氡传输速率、水中氡扩散系数以及水体深度等参数对水中氡浓度和水体表面氡析出率的影响。结果表明:在其他参数保持不变时,(1)同一深度处的水中氡浓度和水体表面氡析出率均随水底射气介质氡析出率的增大而增大;(2)同一深度处的水中氡浓度随氡传输速率的增大而减小,而水体表面氡析出率随氡传输速率的增大而增大,且当氡传输速率大于1×10^-6m/s时,氡传输速率的变化对水体表面氡析出率的影响不明显;(3)同一深度处的水中氡浓度和水体表面氡析出率均随水中氡扩散系数的增大而增大;(4)水体表面处的水中氡浓度和水体表面氡析出率均随水体深度的增大而减小。

关键词: 含氡水体, 氡浓度, 氡析出率, 数值模拟

Abstract: One dimensional differential equation for radon migration in the water containing radon was established using radon seepage-diffusion migration theory and the formula for calculating the concentration of radon in water and the radon exhalation rate at the water surface were derived. In addition, the variation of radon concentration in water and radon exhalation rate at the surface of water were studied when parameter changes such as radon exhalation rate from the emanation medium at the bottom of water body, radon transfer rate, radon diffusion coefficient in water and the depth of the water. The results showed that:when the other parameters remain unchanged,(1)The concentration of radon at the same depth of water and radon exhalation rate on water surface increases with the increase of radon exhalation rate from the emanation medium at the bottom of water body;(2)The concentration of radon at the same depth of water decreases and radon exhalation rate on water surface increases with the increase of radon transfer rate; Furthermore, when radon transfer rate is larger than 1×10^-6m/s, the change of radon exhalation rate on water surface is not obvious with the change of radon transfer rate;(3)The concentration of radon at the same depth of water and radon exhalation rate on water surface increases with the increase of radon diffusion coefficient in water;(4)The concentration of radon in water that close to the surface and radon exhalation rate on water surface decreases with the increase of water depth.

Key words: water containing radon, radon concentration, radon exhalation rate, numerical simulation

中图分类号:

X591

叶勇军, 代鑫涛, 丁德馨, 江俊廷, 李志. 含氡放射性水体氡析出规律的理论研究[J]. 辐射防护, 2017, 37(1): 56-61.

Ye Yongjun, Dai Xintao, Ding Dexin, Jiang Juntin, Li Zhi. Theoretical study on law of radon exhalation in radioactive water containing radon[J]. RADIATION PROTECTION, 2017, 37(1): 56-61.

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