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| Investigation and Evaluation of Radioactivity Level of a Lead-zinc-gold Mine in Hunan |
| ZHANG Qi, CUI Hong-xing, ZHANG Zhen, LIAN De-xing |
| National Institute for Radiological Protection, China CDC China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, Beijing 100088 China |
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Abstract Objective To investigate the radioactivity level of lead-zinc-gold mine in Hunan and analyze possible measures of radiation protection of the underground mine to be taken.Methods The concentration of 222Rn and γ dose rate in underground holes of copper mine was measrued to estimate the annual effective dose of the copper mine staff.Results γ dose rate is (0.05~0.63) μSv/h, Radon concentration is(52~721)Bq/m3. The annual effective dose of the lead-zinc-gold mine staff was 4.84 mSv.Conclusion The underground workplace of the lead-zinc-gold mine has radioactive hazard. Radon concentration is high, and the corresponding protective measures should be taken.
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Received: 08 December 2016
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