School of Resource, Environment and Safety Engineering, University of South China, Hengyang, 421001, Hunan, China.
Hunan Province Engineering Technology Research Centre of Uranium Tailings Treatment Technology, Hengyang, 421001, Hunan, China.
Environ Sci Pollut Res Int. 2022 Nov;29(52):79434-79442. doi: 10.1007/s11356-022-20758-1. Epub 2022 Jun 17.
Uranium tailings sand will continuously release radon-222. When the external condition changes, the exhalation of radon will also change. Thus, radon is being recommended as a tracer for dam damage assessment. When an earthquake is simulated on the uranium tailings dam with a shaking table test and the change in radon concentration is measured, it is observed that the earthquake causes micro-fissures in the uranium tailings dam, which aggregate to form fractures. During the process, the radon concentration will climb dramatically, as will the radon exhalation rate. To verify that the radon monitoring date is accurate, the acceleration response, surface displacement, and interior displacement are all monitored. The results show that radon can be utilized as a tracer to evaluate uranium tailings dam damage.
铀尾矿砂会不断释放氡-222。当外部条件发生变化时，氡的释放也会发生变化。因此，氡被推荐作为大坝损伤评估的示踪剂。在利用振动台试验模拟铀尾矿坝地震，并测量氡浓度变化时，观察到地震导致铀尾矿坝产生微裂缝，这些裂缝聚合形成裂缝。在此过程中，氡浓度会急剧上升，氡释放率也会上升。为了验证氡监测数据的准确性，还监测了加速度响应、地表位移和内部位移。结果表明，氡可用作示踪剂来评估铀尾矿坝的损伤。
