基于非支配多目标优化方法的铀尾矿砂覆盖材料优选  

Preferential Selection of Uranium Tailing Sand Cover Material Based on Non-dominated Multi-objective Optimization Method

作　　者：邓年彪 丁德馨 DENG Nianbiao;DING Dexin(School of Resource Environment and Safety Engineering,University of South China,Hengyang 421001,China)

机构地区：[1]南华大学资源环境与安全工程学院,湖南衡阳421001

出　　处：《铀矿冶》2023年第4期47-52,共6页Uranium Mining and Metallurgy

摘　　要：铀尾矿砂覆盖材料优化选择对铀矿山尾矿砂治理有着重要意义。通过构建铀尾矿砂覆盖层氡浓度分布模型,采用单层和三层覆盖层材料,以氡析出率和综合成本为决策目标构建了多目标决策模型,基于多目标非支配排序方法,寻找可行方案的最优解。对于铀尾矿砂,若采用单层覆盖材料,只有黏土、水泥砂浆和沥青3种材料能够在合理厚度范围内满足氡析出率国标限值要求;与单层覆盖材料相比,三层覆盖层材料外的氡析出率满足国标限值要求,且综合成本降低了75.9%。The optimal selection of uranium tailings sand cover materials is of great significance to the management of tailings sand in uranium mines.By constructing a radon concentration distribution model for uranium tailings sand cover layer,using single-layer and three-layer cover materials,constructing a multi-objective decision model with radon emanation rate and comprehensive cost as decision objectives,and finding the optimal solution of feasible solutions based on multi-objective non-dominated ranking method.For uranium tailing sand,if single-layer covering material is used,only three materials,namely clay,cement mortar and asphalt,can meet the national standard limit value of radon emanation rate within a reasonable thickness range;compared with single-layer covering material,the radon emanation rate outside the three-layer covering material meets the national standard limit value requirement and the comprehensive cost is reduced by 75.9%.

关 键 词：铀尾矿砂 覆盖材料 非支配多目标优化方法 氡析出率 

分 类 号：TL77[核科学技术—辐射防护及环境保护]