Monitoreo de la humedad y de las presiones intersticiales en un depósito de origen glaciar y su efecto en la formación de roturas superficiales. Aplicación en un till en Senet, Alta Ribagorça

[ANGLÈS] Mass movements and, more specifically Debris Flows, are a major geological hazard due to its magnitude and high frequency. They often occur in mountainous areas with steep slopes and are frequently unnoticed by the population. In recent times, the mountain areas have experienced significant urbanization, mainly for reasons related to tourism or leisure. This increase in population and infrastructure is very important for the possible effects of mass movements that may occur, because they can cause both personal and material damage. This thesis is related to the national research project (DEBRISTART), carried out by UPC Barcelona, that aims to study the hazard of Debris Flows at the drainage basin, in Central and Eastern Pyrenees. The basin considered in this study is the Rebaixader ravine near the town of Senet (Vilaller municipality, Alta Ribagorça), located in the Pyrenean axial zone. This basin is one of the most active nationally in terms of Debris Flows. The aim of the monitoring system installed is to determine when a Debris Flow takes place and why it occurs, in order to create an Early Warning System (EWS). This particular work has been multidisciplinary, combining field work with work in the soil mechanics laboratory. The result of which has been an extensive knowledge of the source area of the study basin, so far unexplored, which has been fully equipped. Furthermore, a small-scale experiment was performed, including the numerical model SEEP, trying to simulate field conditions. [CASTELLÀ] Los movimientos de masa y, más en concreto las corrientes de derrubios o Debris Flows, representan un riesgo geológico importante debido a su magnitud y alta frecuencia. A menudo éstos se dan en zonas montañosas con grandes pendientes y suelen pasar inadvertidos por la población, ya que ésta acostumbra a establecerse en zonas más llanas y costeras. En los últimos tiempos, las zonas de montaña han sufrido una urbanización importante, sobretodo por motivos relacionados con el turismo u ocio. Este aumento de población e infraestructuras es de gran importancia de cara a los posibles efectos de los distintos movimientos en masa que puedan ocurrir, dado que pueden producir tanto daños personales como materiales. La presente tesina está enmarcada dentro del proyecto nacional de investigación (DEBRISTART) llevado a cabo por la UPC de Barcelona que pretende estudiar la peligrosidad de las corrientes de derrubios, a escala de cuenca de drenaje, en el Pirineo Cen