Estudio geotécnico in Marinaleda

In Marinaleda, the dominant geological substrate is made up of sandstones, conglomerates and flysch, which account for most of the soils found in the area. These materials generally provide an adequate bearing capacity for conventional foundations and are relatively stable against deformation. Limestones, dolomites and marbles, although less common, can provide a solid base, whereas the occasional presence of fine sands and silts requires specific analysis, as the latter may show a lower bearing capacity and some compressibility, which affects the choice of the most suitable foundation type.

With regard to geotechnical risks, the seismicity of Marinaleda is very low, with only one recorded event and a very low maximum magnitude (Mmax 1.6), so this factor has little impact on structural sizing. However, the possible presence of karst-related phenomena associated with the limestone or dolomite levels makes it essential to check for these before carrying out the foundation, to avoid unexpected voids or subsidence. As the substrate is non-clayey, the risk of expansivity is ruled out, so the main precaution is focused on properly characterising the karstification scenarios.