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本文介绍原地浸出采铀方法的工艺流程及特点,讨论了我国原地浸出采铀工业性试验基地运行期间可能发生的几种事故及事故工况下放射性废物向环境的释放机制。通过对各类事故的分析,得出本工程的最大可信事故为地震造成的蒸发池废水泄漏事故。利用核素在包气带和饱水带中的迁移模式计算了各核素的峰值浓度分布,估算了事故剂量。最后分析了本采铀方法的推广应用前景
This paper introduces the technological process and characteristics of in-situ leaching of uranium from uranium and discusses several accidents that may occur during the operation of in-situ leaching uranium industrial pilot base in our country and the release mechanism of radioactive waste to the environment under accident conditions. Through the analysis of all kinds of accidents, it is concluded that the largest credible accident of this project is the accidental leakage of wastewater from the evaporation pond caused by the earthquake. The peak concentration distribution of each nuclide was calculated by using the migration mode of radionuclides in the aeration zone and the saturated zone, and the accident dose was estimated. Finally, the prospect of popularization and application of this method of uranium mining is analyzed