English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/134130
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Structural geology and geophysics as a support to build a hydrogeologic model of granite rock

AutorMartínez-Landa, Lurdes; Carrera, Jesús; Pérez-Estaún, Andrés ; Gómez, Paloma; Bajos, Carmen
Palabras claveFracture
Geology
Geophysics
Groundwater
Groundwater flow
Hydrogeology
Numerical methods
Unloading Blind predictions
Conceptual model
Discrete elements
Granitic plutons
Hydraulic properties
Hydro geochemistries
Preferential flows
Three-dimensional numerical modeling
Fecha de publicaciónjun-2016
EditorEuropean Geosciences Union
CitaciónSolid Earth, 7(3): 881-895 (2016)
ResumenA method developed for low-permeability fractured media was applied to understand the hydrogeology of a mine excavated in a granitic pluton. This method includes (1) identifying the main groundwater-conducting features of the medium, such as the mine, dykes, and large fractures, (2) implementing this factors as discrete elements into a three-dimensional numerical model, and (3) calibrating these factors against hydraulic data (Martínez-Landa and Carrera, 2006). A key question is how to identify preferential flow paths in the first step. Here, we propose a combination of several techniques. Structural geology, together with borehole sampling, geophysics, hydrogeochemistry, and local hydraulic tests aided in locating all structures. Integration of these data yielded a conceptual model of the site. A preliminary calibration of the model was performed against shortterm (< 1 day) pumping tests, which facilitated the characterization of some of the fractures. The hydraulic properties were then used for other fractures that, according to geophysics and structural geology, belonged to the same families. Model validity was tested by blind prediction of a longterm (4 months) large-scale (1 km) pumping test from the mine, which yielded excellent agreement with the observations. Model results confirmed the sparsely fractured nature of the pluton, which has not been subjected to glacial loading-unloading cycles and whose waters are of Na-HCO3 type. © 2016 Author(s).
Versión del editorhttp://dx.doi.org/10.5194/se-7-881-2016
URIhttp://hdl.handle.net/10261/134130
DOI10.5194/se-7-881-2016
ISSN1869-9510
E-ISSN1869-9529
Aparece en las colecciones: (ICTJA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Perez-Estaun_Solid_earth_7_3_881.pdf10,17 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


Este item está licenciado bajo una Licencia Creative Commons Creative Commons