Estudio geotécnico in Cabeza la Vaca

In Cabeza la Vaca, the dominant geological substrate corresponds to slates and schists, which account for more than 80% of the soils present, whereas granites, gneisses and other igneous rocks appear only occasionally. This composition implies the existence of low-permeability materials, which can hinder drainage and the discharge of water, although they allow the formation of small shallow aquifers. In terms of foundations, slates and schists generally provide adequate bearing capacity, although it is advisable to analyse the point presence of weathering or joints, as well as the areas with granite, due to their different behaviour under structural loads.

Seismic activity in this municipality is very low, with only one recorded event every 30 years and a very low maximum magnitude (Mmax 2), so seismic risk does not represent a relevant concern in design. However, the possible presence of karstic phenomena requires specific checks before undertaking any foundation, as cavities or associated instabilities may exist. The fact that the substrate is non-clayey eliminates risks of expansivity. Consequently, the potential existence of karst is set out as the main geotechnical constraint in Cabeza la Vaca and requires specific verifications in the geotechnical studies prior to construction.