Programa de Doctorat en Enginyeria del Terreny: Envíos recientes
Mostrando ítems 101-120 de 156
Occurrence and fate of emerging contaminants in urban groundwater. A case study : Barcelona
Ensuring good water quality is becoming a major challenge in urban areas. Urban aquifers may suffer pollution from different recharge sources such as water leakage from sewer and septic systems, seepage from rivers, seawater ...
Expansion mechanisms in sulphated rocks and soils
Geological formations containing sulphates are commonly associated with the development of severe expansions when they are involved in tunnel excavation. The intensity of the observed expansive behaviour in these materials ...
Reconstrucción y análisis de ocurrencias regionales de múltiples eventos de movimientos en masa generados por lluvias históricas en los pirineos
En este documento de Tesis Doctoral, se presenta la recopilación, reconstrucción y análisis de los inventarios de movimientos en masa (MM) y los campos de lluvias para tres eventos históricos en los Pirineos, de los que ...
Rendimiento, desgaste y abrasividad en excavación mecanizada de túneles en terrenos heterogéneos
Una base de datos de 33 km de registros de túnel de EPB en la zona de Barcelona se ha examinado en detalle desde el punto de vista de recambio de herramientas de corte y rendimiento de la excavación mecanizada. La base de ...
Estimación de la recarga media anual de acuíferos : aplicación al Baix Ebre
To test the applicability of atmospheric chloride deposition balance and soil water balance in the estimation of aquifer recharge , the chosen area is Vall Baixa de I'Ebre. This is a coastal area of semi-arid climate, which ...
Cone penetration test in a virtual calibration chamber
Cone penetration test (CPT) is a fast and reliable site investigation tool for exploring soils and soft ground. While the interpretation of the test results in clay has advanced considerably from a theoretical and numerical ...
Estimation of aquifers hydraulic parameters by three different tecniques: geostatistics, correlation and modeling
Characterization of aquifers hydraulic parameters is a difficult task that requires field information. Most of the time the hydrogeologist relies on a group of values coming from different test to interpret the hydrogeological ...
GIS-based hydrogeologica platform for sedimentary media
The detailed 3D hydrogeological modelling of sedimentary media that form important aquifers is very complex because of: (1) the natural intrinsic heterogeneity of the geological media, (2) the need for integrating reliable ...
A methodology to assess the combined effect of climate change and groundwater overexploitation over the Upper Guadiana basin, Spain
There is a growing concern about the combined effect of climate change and groundwater overexploitation on the availability of water resources in the Upper Guadiana basin (UppGb) in central Spain. General Circulation Models ...
Monitoring and geomorphologic characterization of debris flows at catchment scale : contributions to debris-flow hazard assessment
Debris flows are very fast mass movements and are considered as one of the most hazardous phenomenain mountainous regions. Research on this field has strongly improved during the last decades. However,many open questions ...
Interaction between groundwater and underground constructions
Underground constructions below the water table may be problematic if the role of groundwater is not properly acknowledged. Difficulties worsen in urban environments. Two aspects should be taken into account in the interaction ...
Tools and analysis of spatio-temporal dynamics in heterogeneous aquifers: applications to artificial recharge and forced-gradient solute transport
This thesis deals with the development of tools and analysis to characterize and predict artificial recharge and radial convergent solute transport processes in heterogeneous media. The goal is to provide new insights to ...
Anomalous dynamics of Darcy flow and diffusion through heterogeneous media
This thesis studies diffusion phenomena in heterogeneous media, which includes Darcy flow and diffusive solute transport in geological media. Natural media are heterogeneous at different scales, which induces complexity ...
Effect of redox conditions on the fate of emergin organic micropollutants during artificial recharge of groundwater: batch experiment
La recarrega artificial de les aigües subterrànies consisteix en infiltrar aigua als aqüífers per mitjà de les instal·lacions dissenyades per a tal fi i representa una eina important en la gestió dels recursos. A més de ...
Riego y fertilización nitrogenada en maíz (zea mays l.): efecto sobre el rendimiento del cultivo y la contaminación subterránea por nitratos
Intensive farming often leads environmental consequences. This is the case of the study area of this thesis: the Empordà, a region with a variety of intensive crops (fruits, cereals, forage,...) and manifest problems of ...
Interaction between groundwater and TBM (Tunnel Boring Machine) excavated tunnels
A number of problems, e.g. sudden inflows are encountered during tunneling under the piezometric level, especially when the excavation crosses high transmissivity areas. These inflows may drag materials when the tunnel ...
Scaling of subsurface processes in heterogeneous aquifers: from hydraulic testing to the use of memory functions
La heterogeneidad de la conductividad hidráulica es bien conocida, pudiendo cambiar varios órdenes de magnitud en poca distancia. Esto afecta nuestras observaciones de los procesos naturales. Para poder explicar la realidad ...
Mobilization and natural attenuation of arsenic in acid mine drainage ( AMD )
L’anomenat drenatge àcid de mina (AMD) ve generat per l’oxidació de sulfurs i és causa major de contaminació d’aigües a nivell mundial. L’arsènic és un del princiapls contaminants laconcentració del qual pot assolir centenars ...
Multiphase gas transport in a shear zone
In the post-operational phase of a Low/Intermediate-Low radioactive waste repository, gas will be generated in the caverns due to anaerobic corrosion of metals, and also chemical and microbial degradation of organic ...
Deformation and flow driven by osmotic processes in porous materials
En el caso del almacenamiento de los residuos radioactivos los flujos osmóticos pueden ser relevantes y requieren un análisis en detalle. El residuo nuclear bituminizado (BW) será almacenado mediante contenedores en cavidades ...
