期刊论文

Chaotic Characteristics of Radon Exhalation from Granite

中文

南华大学学报(自然科学版)

1673-0062

2022

36

2

1-6+56

10.19431/j.cnki.1673-0062.2022.02.001

U1703123:国家自然科学基金 RGET1602:东华理工大学放射性地质与勘探技术国防重点学科实验室开放基金项目

本校为第一机构

相对富铀的花岗岩广泛存在于地表和地下人居环境，其析出的氡会对人体健康造成辐射危害，深入研究花岗岩氡析出机理可为氡防护提供理论依据。本文基于分形和混沌理论，对采自湖南衡阳衡山岩体和广西灌阳都庞岭岩体的样品开展花岗岩氡析出通量随时间变化的规律研究，计算了氡浓度时间序列数据的最大Lyapunov指数和混沌吸引子关联维数，并综合分析讨论了环境因素不变条件下花岗岩氡析出的主要影响因素。结果表明，来自衡山岩体和都庞岭岩体的两个样品264组氡浓度时间序列数据的最大Lyapunov指数分别为0.077和0.308,都大于0,证实来自两个不同岩体的花岗岩氡析出随时间的演化过程为复杂的混沌动力学...

Relatively uranium rich granite widely exists in the surface and underground residential environment.The radon exhalation from granite will cause radiation harm to human health.An in-depth study on the radon exhalation mechanism from granite can provide a theoretical basis for radon protection.Based on fractals and chaos theory,the variation of radon exhalation flux from granite with time is studied for the samples collected from Hengshan rock mass in Hengyang city,Hunan province and Dupangling rock mass in Guanyang,Guangxi province.The maximum Lyapunov exponent and chaotic attractor correlati...