RT Journal Article
T1 Caracterización geoambiental de balsas de lodos mineros mediante tomografía eléctrica
T1 Geoenvironmental characterization of mine ponds by means of electrical resistivity tomography
A1 Gómez Ortiz, David
A1 Martín Crespo, Tomás
A1 Martín Velázquez, Silvia
A1 Lillo, Francisco Javier
A1 Ignacio, Cristina de
AB The mining of copper from sulphide ores, besides the metal production, generates large amounts of minetailings that are deposited, e.g. in impoundments. Furthermore, due to natural leaching from theseimpoundments, contamination of the environment close to the deposits often occurs. In order tocharacterize the internal structure and groundwater flow of abandoned mine ponds in the Iberian PyriticBelt, an electrical resistivity tomography study has been carried out. Two different mine ponds have beenstudied: the Monte Romero mine pond reveals a homogeneous internal structure with a maximum infillingthickness of about 4.5 metres; the La Nava mine pond has a more heterogeneous internal structure withan infilling thickness ranging from 15 to 20 metres. In both cases, the resistivity contrast between theinfilling and the shales constituting the base of the pond is high enough to clearly define the bottom pondboundary. Whereas the Monte Romero mine pond is nearly fully saturated in water, the La Nava oneshows a low resistivity area that defines the groundwater flow scheme inside the pond. The low resistivityvalues (lower than 5 ohm · m) obtained for the mine pond infilling are explained by the high concentrationof pyrite in the tailings and the occurrence of acidic waters. No metal rich water fluxes outside the pondhave been observed, indicating a good isolation of the two studied mine ponds
YR 2007
FD 2007
LK http://hdl.handle.net/10272/8398
UL http://hdl.handle.net/10272/8398
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026