【摘要】 筛选了重庆市10种比较有代表性矿物的20个矿区,开展了矿区γ辐射水平研究;各矿区之间γ辐射剂量率差距比较明显,γ辐射剂量率最大值为439 nGy/h(4#煤矿矿区),γ辐射剂量率最小值为61 nGy/h,平均水平为119.8 nGy/h。通过与环境对照点γ辐射剂量率监测数据的比较,大部分矿区γ辐射剂量处于平均值附近,2#煤矿、4#煤矿和铝矿矿区γ辐射剂量率水平明显高于对照点监测最高值;预测各矿区所致公众、职业照射有效剂量最大值分别为0.61、0.54 mSv/a,均未超过年剂量限值。更多还原

【Abstract】 The γ radiation dosage in 20 areas of 10 representative mines in Chongqing was researched.The γ radiation dosage level of 20 mine areas is different.The maximun value is 439 nGy/h(4# coal mine) and the minimum value is 61 nGy/h and the average value is 119.8 nGy/h.Compared with the collated inspecting points,most of the mine areas approach the average level of the collated inspecting points,but the γ radiation dosage of 2# coal mine,4# coal mine and aluminium mine is bigger than maximum value of the collated inspecting points.The availability maximum dosage to public and worker which was checked is 0.61 mSv/a,0.54 mSv/a,respectively,which is under the prescribed level.更多还原