| 王国坤,息朝庄,淳果,黄旋,李艳桃.贵州遵义钼镍矿区放射性核素环境影响评价[J].矿产勘查,2017,8(5):912-916 |
| 贵州遵义钼镍矿区放射性核素环境影响评价 |
| Radionuclide environmental impact assessment in the Mo-Ni mine area in Zunyi city, Guizhou |
| 投稿时间：2016-12-20 |
| DOI： |
| 中文关键词: 钼镍矿区 放射性 遵义 贵州 |
| 英文关键词: Mo-Ni mine area, radioactive, Zunyi, Guizhou |
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| 摘要点击次数: 1871 |
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| 中文摘要: |
| 文章选取贵州省遵义钼镍矿区为研究对象,通过环境地表γ辐射剂量率、土壤氡气浓度以及岩石中天然放射性核素(238U、232Th、40K)含量, 研究其放射性核素水平,通过研究表明:研究区γ辐射剂量率平均值为280.83nGy·h-1,各矿区之间γ辐射剂量率水平差距比较明显,各钼镍矿区废渣γ辐射污染水平较高；研究区渣场氡浓度水平平均值为100.37Bq·m-3,各矿区之间氡浓度水平差距比较明显,所调查的矿区渣场数据表明矿区氡浓度水平较高,这反映出矿山放射性水平相对较高,可能是由于黑色岩系中放射性水平较高造成的；矿渣中eU含量范围为7.52×10-6～721.61×10-6,平均值103.62×10-6；eTh含量范围为5.91×10-6～344.84×10-6,平均值19.53×10-6；K含量范围为0.1%～4.96%,平均值1.53%。部分样品中铀含量超过边界品位,说明铀含量较高。据此,文章提出相关防治措施。 |
| 英文摘要: |
| This article selects the Zunyi Ni-Mo mine as the research object to study the radionuclide environmental impact assessment through the surface gamma radiation dose rate, the soil radon concentration and the content of the natural radioactive nuclide (238U,232Th,40K) in rock. The study result shows that the average gamma radiation dose rate was 280. 83 nGy·h-1 in the study area, and there is obvious gap of the gamma radiation dose rate in different mining areas.The gamma radiation dose rate in the waste stockpile in different mining areas is relatively high. The average of the radon concentration in the study area is 100. 37 Bq·m-3, and the radon concentration in different mining areas varies greatly, the radon concentration in waste stockpile in different mining areas is relatively high. It reflects the radioactivity is relatively high in the mine area, this may be influenced by the high radioactivity of black rock series. In the mine slag, the eU content ranges from 7.52×10-6to 721.61×10-6, the average value is 103.62×10-6; the eTh ranges from 5.91×10-6 to 344.84×10-6, the average value is 19.53×10-6; the K(%) content ranges from 0.1 to 4.96, the average value is 1.53. The U content reaches above cut off grade in part of samples, which reflects the content of U is high in the mine area. Based on the above-mentioned study, the article puts forward relevant mine prevention measures. |
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