Aplicación de refracción sísmica y tomografía de resistividad eléctrica para la caracterización geofísica en una ladera de Juan XXIII en la ciudad de Pamplona (Norte de Santander, Colombia).

Abstract

The infrastructure built in the last years in Pamplona city does not have the minimum specifications of design according to the seismic- resistant regulations (NSR-10). For this and other factors, it had been implemented underground´s characterization methods in a faster and less invasive way, such as those described in this work; seismic refraction methods and electrical resistivity tomography. It were outlined two survey line of 120 meters where it were obtained factors like shear wave speed profile (Vs), wave speed P (Vp) and the electrical resistivity of the soil. Based on geophysical data achieved in the area and using shear waves was possible establish the density of the materials used, along with the dynamic material parameters. At the same time every one of these factors were connected and it were gotten geological profiles by means of the methods used, in order to correlate it and obtain a final geological profile for every survey line, whom shows clearly and uncertainty the material stratification, where it were noticed for both survey lines substantial presence of clays in low-depth and with considerable thickness, also there are layers comprised of silts and sandstones of a very fine grading. On the other hand, using resistivities it was visualize with higher accuracy the depth of the phreatic level. Finally, it was carried out a method of exploring invasive with the purpose of corroborating the veracity of the results, it were obtained densities and grading classification pretty similar of those acquired in the geophysical methods.