| 721—18废石场覆土实验 |
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| 引用本文： | 吴卫红,夏登桂.721—18废石场覆土实验[J].铀矿冶,1997,16(2):110-114. |
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| 作者姓名： | 吴卫红 夏登桂 |
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| 作者单位： | 江西核工业总公司七二一矿!江西，344301 |
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| 摘 要： | 采用多孔介质双区扩散理论，通过现场试验，求出满足721-18废石场在退役覆土治理后，其氧析出率能降低到0．74Bq／（s·m2）限值以下的合理厚度。结果表明，721－18废石场覆土的氧扩散系数为D＝0．0502cm2／s；当覆土厚度依次为30、50、75和100cm时，相应氨析出率分别降低16％、29％、38％和49％；721－18废石场的合理覆土厚度约为46cm。
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| 关 键 词： | 退役 覆土治理 氡析出率 |
SOIL COVER EXPERIMENT OF WASTE-ROCK YARD No.721-18 |
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| Wu Weihong,Xia Denggui.SOIL COVER EXPERIMENT OF WASTE-ROCK YARD No.721-18[J].Uranium Mining and Metallurgy,1997,16(2):110-114. |
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| Authors: | Wu Weihong Xia Denggui |
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| Abstract: | Reasonable cover thickness, or the eduction rate of radon is satisfied with below 0. 74 Bq/(s .m2) after cover treatment of waste-rock yard No. 721-18 during decommissioning,with the double diffusion theory of porous medium by field test.It turns out that the diffusion coefficient D of radon is 0. 0502 cm2/s for waste-rock yard No. 721-18 after cover- The eduction rates of radon decrease by 16%, 29 %, 38 % and 49 % respectively when the cover thicknesses are 30, 50, 75 and 100 cm- The reasonable cover thickness of the waste-rock yard No-721-18 is 46 cm. |
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| Keywords: | Decommissioning Soil cover treatment Eduction rate of radon |
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