Estudio geotécnico in Morcín

In Morcín, substrates of a carbonate nature predominate, mainly limestones, dolomites and marbles, which provides a solid geotechnical foundation with good bearing capacity for foundations. The smaller areas of fine sands and silts tend to be concentrated in alluvial or backfill positions and require careful consideration due to their lower strength, although their limited presence reduces their influence. In general, the formations present are poorly permeable, which reduces the risk of differential movements due to the washout of fines, although small aquifers linked to discontinuities in the bedrock mass may occur.

Seismic activity in the area is moderate, with 12 events recorded in the last 30 years and a low maximum magnitude (Mmax 2.6), so seismicity does not constitute a relevant structural constraint in normal projects. The presence of karstification in the substrate is highlighted, which requires specific verification through a geotechnical study before carrying out any foundation, since the existence of underground cavities can compromise long-term stability. The fact that the substrate is not clayey rules out risks of expansiveness, placing the verification of karst processes as the main technical limitation in the area.