内蒙古某地浸铀矿山氡的控制措施

Control Measures of Radon in an In-situ Leaching Uranium Mine in Inner Mongolia

介绍了内蒙古某地浸采铀过程中氡及其子体释放的规律,结合地浸矿山工艺提出了控制地浸采铀过程中氡浓度的防护措施。利用大气辐射与监测技术,采用"两封一通"、作业分区处理、合理布局、统一处理、加强通风等方法,降低生产过程中氡对人员健康产生的影响。对大气环境及个人剂量的监测结果表明:周边环境氡最大平均活度浓度为10.7Bq/m^3,氡子体潜能浓度为0.006μJ/m^3,远低于国家标准限值;个人职业照射剂量符合要求,控制措施可行有效。

The release law of radon and its daughters in an in-situ leaching uranium mine in Inner Mongolia was introduced.According to the technology of in-situ leaching uranium,the protection methods of control radon activity concentration was proposed.By application of atmospheric radiation and monitoring technology,adoption of “two seal and one through”,operation partition processing,reasonable layout,unified treatment,and strengthening ventilation etc.methods,the health impact of the workers in the process of production was reduced.The results of atmospheric environment and personal dose monitoring indicate that the biggest average radon activity concentration of the around environment is 10.7 Bq/m^3 ,and potential energy concentration of radon daughters is 0.006 μJ/m^3 .The result is far lower than that of the national standard limit value.The personal dose monitoring result shows that less effect is on occupational health.That the control measures are feasible and effective.