铀尾矿滩面氡析出率与环境因素的灰色关联度分析

Analysis on Uranium Tailings Beach Surface Radon Exhalation Rate and Environment Factors Based on Gray Correlation Degree Method

通过对衡阳市某铀尾矿滩面的氡析出率、大气温度、大气湿度、气压、γ剂量率、土壤含水率等环境物理量进行监测采集。应用灰色关联度分析法计算分析了其中各因素与氡析出率的关联度,结果发现在分辨系数为0.5的条件下,大气温度、大气湿度、气压、γ剂量率及土壤含水率与氡析出率的关联度分别为0.550 1,0.476 1,0.631 5,0.748 2和0.485 9,其中γ吸收剂量率对氡析出率关联度最大;而大气湿度的关联度最小。结合氡析出率的影响因素具有多重性的特点,试验研究成果可为以后探索氡析出率与各环境指标量的数学关系提供重要参考。

In this paper,by detecting the rate of Radon＇s retention,atmosphere temperature,moisture and pressure,the rate of γ and the moisture content of soil in Uranium tailings of Hengyang City,the grey relational analysis method is applied to analyze and calculate the correlation between Radon＇s retention and other factors. It is found that,in the resolution factor of 0. 5,the correlation degrees of air temperature,air humidity,air pressure,γ dose rate and soil moisture with radon exhalation rate are 0. 550 1,0. 476 1,0. 631 5,0. 748 2 and 0. 485 9 respectively,and among them,that of the absorbed dose rate of γ to radon exhalation rate is the largest,and that of the atmospheric humidity is the smallest. Since there exists multiplicities of association in factors affecting radon exhalation rate,the research results can provide references for exploring the correlation of each environmental index with radon exhalation rate.