铜绿山矿区主要环境介质磁化率与粒度研究

Environmental Magnetic Susceptibility and Granularity Analysis in the Tonglvshan Mine Area

对铜绿山矿区9件水覆尾砂、7件水稻土和8件水系沉积物进行体积磁化率、频率磁化率和粒度测试,并运用SPSS统计软件对数据相关性进行相关矩阵分析,结果表明,磁性矿物主要集中于3种环境介质的砂粒级颗粒中;尾砂和水系沉积物粒度和磁化率在空间上的分布特点与水动力条件密切相关,而在水稻土中的分布规律却不太明显;与对比样磁性特征比较后发现,水稻土和水系沉积物存在着很高的污染风险。

Seven paddy soil samples,nine water-covered tailing samples and eight stream sediment samples around the mining tails were collected and the magnetic susceptibility of volume susceptibility,frequency-dependent susceptibility and granularity had been tested and the correlation between the magnetic susceptibility values and the granularity based on SPSS statistical software,the results showed that magnetic substances mainly concentrated on the sand particles of the three aforementioned environmental media. The granularity and magnetic susceptibility were closely correlated with each other in tailings and stream sediments,but distribution rule in paddy soils was not obvious significantly. After comparing with magnetization characteristics,it revealed that paddy soils and stream sediments had high contamination risk.