江西德兴金山金矿田矿山辐射调查

Survey on radiation in mines of Jinshan gold field of Dexing County,Jiangxi Province

对金山金矿田的金山金矿、花桥金矿区露天水源的天然铀、氡，居民区和井下作业人员的γ外照射年有效剂量等进行调查。结果表明，金山、西蒋矿区露天水源天然铀的质量浓度、氡的活度均小于限值０－０５ｍｇ／Ｌ 和３７－００Ｂｑ／Ｌ，空气氡的活度为０－００８ ～０－０１３Ｂｑ／Ｌ。居民和井下作业人员γ外照射年有效剂量当量均小于１ｍＳｖ 和５ｍＳｖ。矿区放射性均在国家规定的环境评价指标之内，对矿山附近居民健康和环境无影响。

Surveys on radiation from natural uranium and radon in the open water supplies of the areas of Jinshan and Huaqiao gold mines and the γ ray irradiation in residential area and underground are made.The results show that in open water supplies of Jinshan and Xijiang mining areas,the mass density of natural uranium and the activity density of radon are lesser than limit values 0.05mg/L and 37.00Bq/L respectively,the activity density of radon in the air is 0.008-0 013Bq/L,the annual effective dosage of γ ray irradiation endured by inhabitants and operators underground are lesser than 1ms and 5ms respectively.The radioactivity in mining areas are within national index limits of enviromental appraisal which have no influence on mining men and environment.