黏土对氡的阻隔性能研究

Research on the Barrier Performance of Clay to Radon

黏土是伴生放射性废渣覆盖层的重要组成部分,对其屏蔽性能的研究意义重大。通过自行设计的试验装置,开展了有关黏土屏蔽氡的性能研究,包括黏土类别、黏土水含量、乳液类别、黏土+土工膜等对屏蔽氡的影响。结果表明,蒙脱土是屏蔽能力较好的黏土,25%含水量蒙脱土的性能优于其他含水量的蒙脱土,蒙脱土+聚氨酯乳液、蒙脱土+土工膜均可获得理想的屏蔽效果。本研究结果为黏土用于屏蔽氡提供了一定的基础数据和理论指导。

Clay is a crucial component of the coexisting radioactive waste cover layer.The investigation of its shielding performance is of significant importance.In this study,the effects of clay type,clay moisture content,emulsion type,clay+geomembrane on radon shielding were studied by means of self-designed experimental apparatus.The results show that montmorillonite stands out as a clay type with relatively superior shielding capabilities,montmorillonite with 25%moisture surpassed other moisture levels,montmorillonite combining either polyurethane emulsion or geomembranes can yield favorable shielding effects.This research provides essential data and theoretical guidance for the utilization of clay in radon shielding.