铀矿井排风井氡排放量连续测量  

Method for Continuous Monitoring of Radon Emissions from Exhaust outlet in Uranium Mines

作　　者：龙慧佳 冯旭[2] Long Huijia;Feng Xu(Hunan Prevention and Treatment Institute for Occupational Diseases,Changsha 410000,China;School of Nuclear Science and Technology,University of South China,Hengyang 421001,China)

机构地区：[1]湖南省职业病防治院,长沙410000 [2]南华大学核科学与技术学院,湖南衡阳421001

出　　处：《中国资源综合利用》2020年第4期1-4,共4页China Resources Comprehensive Utilization

基　　金：“环保部核与辐射安全监督管理技术支持”(JG201446)的阶段性研究成果之一。

摘　　要：铀矿是当前支持我国核工业发展的主要矿产之一,但目前我国对其通风井排放口的氡浓度和风速分布测量还不够成熟。本文采用标准推荐的单点采样法并结合插值积分程序,对我国某铀矿通风井排放口的氡浓度、风速分布进行测量研究。测量结果表明,在稳定工况下,铀矿通风井的氡浓度和风速均呈轴对称的抛物线分布,单点测量程序平均法测量的氡浓度约为63594 Bq/m^3,氡排放率为7.414×10^6 Bq/s。Uranium ore is one of the main minerals currently supporting the development of China’s nuclear industry,but at present China’s measurements of radon concentration and wind speed distribution at the vents of its ventilation shafts are not mature enough.In this paper,the standard recommended single-point sampling method combined with the interpolation integration program is used to measure the radon concentration and wind speed distribution in the vent of a uranium mine in China.The measurement results show that under stable conditions,the radon concentration and wind speed of the uranium mine ventilation shaft are distributed in an axisymmetric parabola,the radon concentration measured by the single point measurement program average method is about 63594 Bq/m^3,and the radon emission rate is 7.414×10^6 Bq/s.

关 键 词：排氡率 连续测量 静电收集法 平均氡浓度 

分 类 号：TL751[核科学技术—辐射防护及环境保护]