School of Resources Environmental and Safety Engineering, University of South China, Hengyang, 421001, Hunan, China.
College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, China.
J Environ Radioact. 2024 Mar;273:107393. doi: 10.1016/j.jenvrad.2024.107393. Epub 2024 Feb 13.
In this paper, the influence of an earthquake on radon exhalation rate of uranium tailings reservoir beach under high temperature environment is studied by using a self-made integrated simulation test device for natural disasters, and a scale model test based on similarity and dimensional laws. The results show that, (1)When the peak acceleration reaches 0.6g, the radon exhalation rate increases sharply with the increase of peak acceleration, and tends to be gentle after 1.0g. (2)Under the action of high temperature, the radon exhalation rate increases rapidly with the increase of high temperature time, and gradually becomes flat after the 4th hour. (3)Compared with loading the earthquake condition only, the coupling effect of high temperatures and earthquakes causes a greater degree of damage to the beach surface of a uranium tailings reservoir under the same acceleration conditions, and the fissure rate and radon exhalation rate of the beach surface are substantially increased.
本文利用自主研发的综合模拟灾害试验装置和基于相似性与量纲律的缩尺模型试验，研究了高温环境下地震对铀尾矿库滩面氡析出率的影响。结果表明：（1）当峰值加速度达到 0.6g 时，氡析出率随峰值加速度的增加而急剧增加，在 1.0g 后趋于平缓；（2）在高温作用下，氡析出率随高温时间的增加而迅速增加，在第 4 小时后逐渐趋于平稳；（3）与仅加载地震条件相比，在相同加速度条件下，高温与地震的耦合作用对铀尾矿库滩面造成更大程度的破坏，滩面裂缝率和氡析出率显著增加。
