Geoelectric interpretation of petrophysical and hydrogeological parameters in reclaimed mine tailings areas
Geoelectric interpretation of petrophysical and hydrogeological parameters in reclaimed mine tailings areas
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DOI：
10.1016/j.jappgeo.2020.104139
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发表时间：
2020-10-01
影响因子：
2
通讯作者：
Moisio, K.
中科院分区：
文献类型：
--
作者：
Canales, R. Mollehuara;Kozlovskaya, E.;Moisio, K.
应用非侵入式电阻率成像（ERI）技术对某尾矿库复垦区的电性参数和水文地质参数进行了定量解释。尾矿基质的组成、孔隙结构和粘土含量变化不大，但对体电阻率有影响。因此，尾矿基质包括在一个多相的方法，称为广义阿尔奇方程和建模的体积电阻率，水分含量和饱和度的解释在渗流区的废物存款。这一结果与电阻率对尾矿水文地质参数的敏感性的解释是一致的。该模型提供了一个可靠的近似的水分含量和饱和度的分布在包气带，并首次定量描述的作用的尾矿矩阵的贡献者的电响应。同时也证实了孔隙水的离子组成和饱和度是体电阻率变化的控制因素，文中所述的方法有利于预测尾矿设施中的电参数和水力参数，这对于监测这些结构的完整性具有重要意义。(C)2020年，任作家。由爱思唯尔公司出版
The research applies non-invasive electrical resistivity imaging (ERI) for the quantitative interpretation of electric and hydrogeological parameters in a reclaimed tailings area. Composition, porous structure and day content do not change significantly in the tailings matrix but have influence in bulk electrical resistivity. Therefore, the tailings matrix was included in a multiphase approach known as generalized Archie's equation and modelled for interpretation of bulk electrical resistivity, water content and saturation in the vadose zone of the waste deposit. The results are consistent to explain the sensitivity of electrical resistivity to tailings hydrogeological parameters. The model provides a reliable approximation of the distribution of water content and saturation in the vadose zone and describes quantitatively for the first time the role of the tailings matrix as contributor of the electrical response. It also confirms that pore-water of ionic composition and saturation are the controlling factors for the variability of the bulk electrical resistivity.The method described in the paper is beneficial for predicting electrical and hydraulic parameters in tailings facilities, which is important for monitoring the integrity of these structures into the future. (C) 2020 The Authors. Published by Elsevier B.V.