Programa de Doctorat en Enginyeria del Terreny: Envíos recientes
Mostrando ítems 81-100 de 156
Analyse multi-échelle de l'approche énergétique de la rupture des grains au sein de matériaux granulaires
Au cours des dernières années, les analyses multi-échelles en mécanique des sols granulaires deviennent de plus en plus répandues. L’avantage de ce type d’approches réside dans leur capacité à établir un lien entre les ...
Thermo-hydro-mechanical coupled analysis in low permeability media
El análisis de problemas Termo-Hidro-Mecánicos (THM) en medios de baja permeabilidad es un problema complejo en el cual confluyen diversos factores. Esta Tesis está orientada principalmente al estudio de procesos THM ...
Particle model for crushable aggregates which includes size, time and relative humidity effects
This thesis presents a study of the mechanical behaviour of coarse-crushable aggregates, using the discrete element method (DEM). A novel DEM model has been developed taking into account particle breakage, the influence ...
A coupled CFD-DEM model for sand production in oil wells
During the oil recovery a hole is drilled, the sandstone is left unsupported next to the cavity and disloged sand grains can enter the oil recovery system. This process is called sand production and several problems may ...
MPM modelling of landslides in brittle and unsaturated soils
Landslides and slope instabilities represent one of the most important problems in geotechnics causing significant damages around the world every year. Understanding the mechanics of the whole process is of particular ...
Thermomechanical modelling of ground response under environmental actions.
Natural disasters, such as landslides triggered by heavy rains, rock deformations and soil cracking in presence of temperature changes and other phenomena related to climatic actions, show the relevance of investigating ...
Mechanical performance and sustainability assessment of reinforced soil walls
Soil reinforced retaining wall structures are materiallymore efficientthan competing construction solutions such as gravity and cantilever walls. Nevertheless, the behaviour and interactions between the com ponent materials ...
A hydrogeological approach in urban underground infrastructures
The competition for space in urban areas due to an exponential growth of population makes derground engineering plays a crucial role in the development of cities. Urban underground infrastructures deal with variables such ...
Transport of water, vapour, heat and solutes in concrete for storing radioactive waste
Cementitious materials are used as barriers in radioactive waste storage. Hence, transport processes in this kind of material are important. The objective of this thesis is to improve the understanding of transport of water ...
Efectos de la microestructura en el comportamiento hidromecánico de suelos compactados
The microstructure, understood as the distribution of pore sizes and their connectivity, is an important factor that affects the mechanical behaviour and the hydraulic properties of compacted soils with fine fraction (silts ...
GIS platform for management of shallow geothermal resources
This thesis promotes an efficient use of shallow geothermal energy by means of an integrated management system to organize its exploitation. Shallow geothermal energy is a renewable resource based on thermal energy exchange ...
Assessment of the magnitude-frequency relationship of landslides and rockfalls : application to hazard mapping
Due to the exponential grown of the population within the last decades, the landslide hazard assessment of earthflows and rockfalls and their hazard mapping have become an essential tool for the territory management, mostly ...
Influence of ambient temperature on building monitoring in urban areas during the construction of tunnels for transportation
A large number of underground works are under construction in several big cities around the world (London, Paris, Amsterdam, Beijing, Shanghai, Chicago, Caracas, Mexico D.F., and Riad, for instance): railway tunnels, water ...
Geochemical kinetics during CO2 sequestration : the reactivity of the Hontomín caprock and the hydration of MgO
A test site for CO2 geological storage is situated in Hontomín (Burgos, northern Spain) with a reservoir rock that is mainly composed of limestone. The reservoir rock is a deep saline aquifer, which contains a NaCl- and ...
Backanalysis methodology based on multiple optimization techniques for geotechnical problems
Nowadays, thanks to the increase of computers capability to solve huge and complex problems, and also thanks to the endless effort of the geotechnical community to define better and more sophisticated constitutive models, ...
Processes affecting the efficiency of limestone, aragonite and dolostone in passive treatments for AMD
Waters from mines (acid mine drainage-AMD), contain elevated concentrations of SO-24, Fe and other contaminant metals, which can persist in the environment during centuries. The purpose of AMD treatments is to retain metals ...
Risk managment of complex aquifers contaminated by chemical mixtures : numerical tools and human health risk assessment
Human impact on groundwater resources has led to a rapid growth of social concerns worldwide owing to an increasing presence of toxic chemicals released in the subsurface. Risk assessment provides the scientific tool needed ...
Coupled heat and water flow dynamics in dry soils : application to a multilayer waste cover
Unsaturated flow plays an important role in numerous environmental phenomena. It is complex in arid regions, where liquid water fluxes are small and vapor fluxes become relevant, so that heat, water and solute mass transport ...
Estudio experimental y análisis numérico de la desecación en suelos arcillosos
This thesis focuses on the experimental and numerical study of the desiccation processes of low-plasticity clayey soils that usually result in shrinkage and often in cracking. A comprehensive state of the art that defines ...
Dissolved CO2 effect on the reactivity of the Hontomín reservoir rocks (limestone and sandstone)
A test site for CO2 geological storage is situated in Hontomín (Burgos, northern Spain) with a reservoir rock that is mainly composed of limestone (80-85%) and sandstone (15-20%). The reservoir rock is a deep saline aquifer ...
