Original scientific paper
https://doi.org/10.17794/rgn.2021.5.5
SIMULATION OF GROUNDWATER CONTAMINATION BY LEAKAGE FROM WASTE-FILLED MINE
Mojtaba Dehqani Tafti
; Shahrood University of Technology, Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood, Iran
Faramarz Doulati Ardejani
; School of Mining, College of Engineering, University of Tehran, Tehran
Mohammad Fatehi Marji
; Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Iran
Yousef Shiri
; Shahrood University of Technology, Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood, Iran
Abstract
Mining wastes are a great source of pollutants. Open-pit backfill materials can be found as waste rock and as tailings. The aim of the current study was the investigation of the contaminant transportation pathways by groundwater flow from these waste materials through heterogeneous porous media. Numerical Lattice Boltzmann Method (LBM) was used for examining the effects of different factors on pollutant transportation through groundwater beneath the waste materials. Grain size, vertical and horizontal fracturing, and hydraulic pressure gradient were factors considered here. The results showed that contaminant transportation by the groundwater flow from the waste materials through porous media depends on primary and secondary matrix porosity of the open-pit material, heterogeneity in permeability of aquifer rock, and hydraulic head of groundwater.
Keywords
Lattice Boltzmann Method (LBM); contamination back-diffusion; low-permeable lenses; aquifer remediation; dual permeable medium (DPM)
Hrčak ID:
266323
URI
Publication date:
24.11.2021.
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