Estudio geotécnico in Gójar

In Gójar, the ground composition is dominated by fine sands and silts, followed by a significant proportion of hard materials such as limestones, dolomites and marbles. The latter formations provide good bearing capacity and are favourable for shallow (direct) foundations provided that the substrate homogeneity is guaranteed. However, the occasional presence of gypsum, anhydrite and salts introduces a dissolution risk, particularly in areas where shallow aquifers may be delineated, given the locally reduced permeability. It is essential to avoid founding on water bodies and to consider stability carefully when hard clays and marls are encountered, as they may exhibit some expansive potential depending on their extent and location.

The municipality of Gójar exhibits moderate seismicity, with 26 recorded events over the last 30 years and a maximum magnitude of 3.4, so the seismic impact on the buildings is limited. Nevertheless, given the geological setting, the presence of karstic formations implies the need to verify the existence of underground cavities before carrying out any type of foundation, as they may cause unexpected subsidence. Expansivity is restricted to the subordinate presence of clays in unfavourable environments, which reduces its incidence on the stability of structures. Thus, the main geotechnical precaution in the area lies in controlling karst and avoiding the effects of dissolution in soils containing gypsum and salts.