摘要
本文根据双区扩散理论，结合在七一二矿的现场实验，采用了归一化的方法推断实验地点原始氡析出率，通过不同覆盖厚度下覆土前后的氡析出率，导出了覆土材料的扩散系数的计算式和满足标准要求的氡析出率（≤０．７４Ｂｑ·ｍ－２·ｓ－１）的覆土厚度计算式．
On the basis of the double region diffusion theory and the results of spot tests carried out at the Urnaium Mine No. 712, the original release rate of radon at the test spot was inferred by normalization method. Through the calculation of radon release rates before and after covering with various thickness soil cover, the formula for calculation of diffusion coefficient of soil covering material was deduced as Dc = , and the formula for calculation of the soil cover thickness was obtained as Xc, when the standard requirement for radon release rate (≤0. 74 Bq. m-2. s-1 )met.
出处
《铀矿冶》
CAS
1994年第3期149-155,共7页
Uranium Mining and Metallurgy
关键词
覆土厚度
铀矿物
废物处理
Uranium waste rock Soil cover thickness Radon release rate Diffusion coefficient
