【摘要】：采用考慮彌散的數(shù)學(xué)模型計(jì)算272廠鈾尾礦中~(238)U、~(230)Th、~(226)Ra、~(210)Pb和~(210)Po的釋放和遷移過程。結(jié)果表明:在300年的時(shí)間尺度上,272廠鈾尾礦中的~(210)Po、~(230)Th、~(210)Pb不能到達(dá)距離200m處的水井;水井中~(238)U和~(226)Ra的活度濃度和累積活度均呈指數(shù)增長(zhǎng);~(238)U、~(226)Ra的活度濃度將分別經(jīng)過10、50a左右超過《生活飲用水衛(wèi)生標(biāo)準(zhǔn)》(GB 5749—2006)的總α放射性≤0.5Bq/L的要求。
[Abstract]:The release and migration processes of ~ (238) U ~ (230) Th,~ (226) Ra,~ (210) Pb and ~ (210) Po in uranium tailings of 272 plant are calculated by using a mathematical model considering dispersion. The results show that the ~ (210) Po,~ (230) Th,~ (210) Pb in uranium tailings of 272 plant can not reach the well 200 m from the time scale of 300 years. The activity concentration and cumulative activity of ~ (238) U and ~ (226) Ra increased exponentially. The activity concentration of ~ (238) U ~ (226) Ra will exceed the total 偽 -radioactivity 鈮，

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