Estudio geotécnico in Belchite

In Belchite, the predominant soils correspond to sandstones, conglomerates and flysch; materials that generally exhibit good mechanical behaviour and an adequate bearing capacity for conventional foundation typologies. Occasional occurrences of limestones, dolomites, marbles and, in smaller proportions, gypsum, anhydrite and salts imply that the nature of the subsoil can vary locally; therefore, it is essential to carefully characterise stratigraphic profiles before design. The existence of extensive, highly permeable aquifers also determines the need for rigorous control of the groundwater table during excavation and foundation phases.

Seismic activity in the municipality, with 66 events over the last 30 years and a maximum magnitude of 2.6, is considered notable although with limited effects on the usual design, since the magnitudes do not exceed critical records. It is important to mention the possibility of karstification due to the presence of carbonate and evaporitic materials. The existence of gypsum, anhydrite and salts poses a certain risk of dissolution phenomena that could affect the stability of foundations, as well as localised subsidence. The absence of a clayey subsoil rules out the problem of expansiveness, and the main constraint lies in prior verification of the karst risk and soluble bathymetry in the project area.