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目的调查山东省莱州市三座省属国有金矿氡浓度水平,估算矿工接受年有效剂量。方法利用CR-39固体径迹探测器测量累积氡浓度。结果测量期间三座金矿井下氡浓度平均值分别约为72.3、106.6和115.2Bq/m3,估算氡及其子体所致矿工年有效剂量分别为0.45、0.67和0.72 mSv。结论三座金矿应采取加大通风能力等措施降低井下氡浓度;对井下矿工应按照职业照射人员的要求开展职业健康监护。
Objective To investigate the concentration of radon in the three gold deposits of three provinces in Laizhou City, Shandong Province, and estimate the annual effective dose accepted by miners. Methods The cumulative radon concentration was measured using a CR-39 solid track detector. Results The average radon concentrations in the three gold mines during the survey were about 72.3,106.6 and 115.2Bq / m3, respectively, and the annual effective dose of radon and its daughters to miners was estimated to be 0.45, 0.67 and 0.72 mSv, respectively. Conclusion Three gold mines should take measures to increase the ventilation capacity and other measures to reduce the concentration of underground radon; underground miners should be in accordance with the requirements of occupational exposure personnel to carry out occupational health care.