据估计,我国煤矿井下工作人员人数在600万左右,而已有的数据不但表明某些地区煤中放射性物质含量较高,同时也表明煤矿井下氡的照射问题值得重视。因此,对我国煤矿井下工作人员所受的职业照射进行较为全面的评价是非常必要的。根据对安徽、北京、贵州、河北、湖南、江苏、江西、 It is estimated that the number of coal mine workers in China is about 6 million, and the available data not only indicate the high radioactive content of coal in some areas, but also indicate that the issue of underground radon irradiation deserves attention. Therefore, it is very necessary to conduct a more comprehensive evaluation of occupational exposure to mine workers in our country. According to Anhui, Beijing, Guizhou, Hebei, Hunan, Jiangsu, Jiangxi,