德阳市道路环境γ辐射剂量水平

γ Radiation Dosage level of the Road Environment in Deyang

本文在德阳市环境天然放射性水平调查基础上,对市辖5953.75平方公里范围内的五种不同材料路面,47个测点的道路γ辐射剂量率进行了分析研究,其结果是:(1)陆地γ辐射剂量率为5.54×10^(-8)Gyh^(-1);(2)贯空辐射剂量率为8.71×10^(-8)Gyh^(-1);(3)不同材料路面γ辐射剂量率的大小顺序是:泥土>碎石>水泥>柏油>石块路面。

Based on the investigation of the environmental natural radioactivity level, the road γ radiation dosage rate for five different road parements at forty-seven points covering 5953. 75km^2 were measured and analysed. The results are:(1) The land γ radiation dosage rate is 5.54×10^(-8)Gyh^(-1), (2) The penetrating radiation dosage rate is 8.17×10^(-8)Gyh^(-1), (3)γ radiation dosage rate of different road pavement is in Sequence: clay >macadam>cement>tar>stone.