桂阳潘家庄地区地表γ辐射空气吸收剂量率估算与放射性环境评价
Estimation of Airborne Absorbed Dose Rate of Surface Gamma Radiation and Radioactive Environment Assessment in Panjiazhuang Area of Guiyang County
孟繁星 1刘俊峰 1韦光景 1郭军 2黄乐清3
作者信息
- 1. 湖南省核地质调查所,湖南 长沙 410007
- 2. 湖南省地球物理地球化学调查所,湖南长沙 410014
- 3. 湖南省地质调查所,湖南长沙 410014
- 折叠
摘要
桂阳潘家庄地区花岗岩大面积出露,导致土壤中的放射性核素活度浓度普遍偏高.较高的γ辐射空气吸收剂量是否存在风险成为人们关心的问题.本文通过已有γ伽玛能谱测量数据估算出地表γ辐射空气吸收剂量率,根据地表γ辐射空气吸收剂量率与人居环境适宜性的关系,从而进行人居环境适宜性分区.得出γ辐射安全区197.90 km2,占全区面积的98.95％;风险区1.42 km2,占0.71％;管制区仅0.68 km2;表明潘家庄地区天然放射性人居环境优良.本文可为该地区人居环境选址、合理、有效地利用潘家庄地区的国土资源提供支持,也可对加速潘家庄地区乡村健康与可持续发展提供必要的参考.
Abstract
The large area of granite exposed in Panjiazhuang area of Guiyang,results in a generally high concentration of radionuclide activity in soil.The risk of higher airborne ab-sorbed doses of gamma radiation has become a hot issue.In this paper,the air absorbed dose rate of surface gamma radiation is estimated based on the existing gamma spectrum measure-ment data.According to the relationship between the air absorbed dose rate of surface gam-ma radiation and the suitability of human settlements,the suitability zoning of human settle-ments is carried out.Within the controlled area of 0.68 km2,the safe zone of gamma radia-tion measures 197.90 km2,accounting for 98.95％of the total area.The risk zone is 1.42 km2,accounting for 0.71％,which shows that the natural radioactive human settle-ment environment in Panjiazhuang area is good.This paper can provide support for the loca-tion of human settlements,reasonable and effective use of land resources in Panjiazhuang ar-ea,and also provide necessary reference for accelerating the health and sustainable develop-ment of rural areas in Panjiazhuang area.
关键词
桂阳潘家庄/γ能谱/放射性水平/空气吸收剂量率/人居环境安全Key words
Panjiazhuang of Guiyang county/gamma spectrum/the level of radioactivity/air absorbed dose rate/human settlement environment security引用本文复制引用
基金项目
湖南省地质院科研基金(HNGSTP202207)
出版年
2024
NETL
NSTL
维普
万方数据