期刊论文

Theoretical Study on Rule of Radon Exhalation of Water-immersing Particle-packing Emanation Media

中文

原子能科学技术

1000-6931

2016

50

9

1721-1728

10.7538/yzk.2016.50.09.1721

11105069:国家自然科学基金 11575080:国家自然科学基金

本校为第一机构

铀尾矿库和地表浸铀铀矿堆是一种颗粒堆积型射气介质,其水位的变化和覆水厚度对氡迁移与析出的影响不容忽视。为揭示这类介质表面氡析出的规律,本文基于菲克定律和气液两相界面氡的传输理论,建立了水浸颗粒堆积型射气介质氡的一维传输-扩散数学模型,并获得稳态条件下气液两相体系中氡浓度分布的解析解和氡析出率的计算公式。通过研究,获得以下结论:1)水位为0m时,颗粒堆积型射气介质表面氡析出率随介质厚度的增大而增大,其增长率随厚度的增大而减小;2)介质表面氡析出率随水位的增大先增大后减小;3)当水体高度大于射气介质厚度时,覆水表面氡析出率随覆水厚度的增大而减小,随覆水氡扩散系数的增大而...

Uranium tailings and surface heap leaching of uranium ore are particle-packing emanation media, and the effect of the inner water level and the thickness of the overlying water on the migration and emanation of radon can not be ignored. In order to reveal the law of radon emanation on the surface of the media, according to the Fick's law and the radon transfer theory in air-water interface, one-dimensional diffusion-transfer mathematical model of radon in the water-immersing particle-packing emanation media was established, and the analytical s...