某矿氡污染分析和通风降氡效果  

Radon Contamination Analysis and Control in a Uranium Mine

作　　者：周星火[1] 李先杰[1] 

机构地区：[1]核工业第六研究所,衡阳421001

出　　处：《辐射防护通讯》2002年第3期7-11,共5页Radiation Protection Bulletin

摘　　要：本文针对某铀矿井矿石铀品位高、析出氡量大和无轨开采斜坡道风流污染大等问题 ,对该矿氡污染进行了全面分析 ,提出了通过调整压力分布 ,建立“负压沟”的办法 ,将矿井主要氡源析出氡调至和集中到回风系统 ,从而有效控制氡源的氡析出 ,取得较好的通风降氡效果。矿工总有效剂量由 5 8.5 2 m Sv/ a降至 1 3.3m Sv/To address the problems of high uranium ore grade,huge radon emission and radon contamination to inline tunnel in one trackless mining uranium mine,the radon contamination situation has been analyzed in this report.By the method of adjustment of pressure distribution and building of negative pressure channel,radon releases from main radon source have been collected to return air system.Emission radon from radon source is effectively controlled.The purpose of reducing radon concentration is reached.The miner's total effective dose is decreased from 58.52 mSv/a to 13.3 mSv/a.

关 键 词：降氡效果 铀矿 氡污染 通风 放射性污染 氡析出 

分 类 号：X591[环境科学与工程—环境工程] TD72[矿业工程—矿井通风与安全]