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Hydrogeological Analysis of Sulfide Tailings at a Uranium Mine Using Geophysical and Hydrochemical Methods
Mine Water and the Environment ( IF 2.8 ) Pub Date : 2021-06-15 , DOI: 10.1007/s10230-021-00791-1
Débora Andrade Targa , César Augusto Moreira , Matheus Felipe Stanfoca Casagrande

A hydrogeological analysis was conducted of aquifer systems within a sulfide-rich tailings pile and underlying rocks at a uranium mine to understand the generation and transport of AMD. A geophysical investigation was carried out along seven transects spaced 30 m apart using electrical resistivity tomography and a Wenner-Schlumberger array. The results were used as input to 2D and pseudo-3D models of resistivity and chargeability parameters. The geophysical results and models contrasted unaffected saturated zones and zones impacted by AMD, in addition to three areas within the tailings with a high sulfide content. The tailings and underlying fractured bedrock aquifer are hydrologically connected, which promotes the exchange of mine-influenced water into the regional aquifer. Releases from the site’s tailings and other wastes can severely affect regional groundwater.



中文翻译:

使用地球物理和水化学方法对铀矿硫化物尾矿进行水文地质分析

对铀矿富含硫化物的尾矿堆和下伏岩石内的含水层系统进行了水文地质分析,以了解 AMD 的产生和运输。使用电阻率层析成像和 Wenner-Schlumberger 阵列沿间隔 30 m 的七个断面进行了地球物理调查。结果用作电阻率和可充电性参数的 2D 和伪 3D 模型的输入。地球物理结果和模型对比了未受影响的饱和区和受 AMD 影响的区域,以及尾矿中硫化物含量高的三个区域。尾矿和下伏的裂隙基岩含水层在水文上是相连的,这促进了受矿山影响的水向区域含水层的交换。

更新日期:2021-06-15
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