Caracterización del subsuelo a partir de datos geofísicos en el campus de la Universidad de Pamplona.

Abstract

The University of Pamplona is located in the municipality of Pamplona, Norte de Santander. Inside its facilities there are areas of which there is no georeferenced information about the land, nor its geotechnical and geophysical properties. The present study was carried out in order to know the characteristics of the shallow layer of the terrain existing in the hillside area of the anterior part of the morphology laboratory, for which tests such as topographic survey, seismic refraction test, MASW and electrical resistivity were carried out. The data of seismic refraction and MASW were obtained through the software Seismidaq v3; for the acquisition of the electrical resistivity data was performed through the Terrameter LS 04-064-250. Where p-wave velocities are obtained between 960-2400 m / s, wave velocities s in the range of 163-292 m / s with a total of six layers and electrical resistivities of materials of 164-893 Ohm-m for zones of high resistivity, classifying the subsoil with respect to Decree 926 of 2010, two types of soil profiles E and D are obtained, with P-wave velocities, dynamic soil parameters are obtained as the ultimate and admissible bearing capacity, modulus of stiffness, coefficient of Poisson, elastic modulus and angle of friction, with the obtained results of it concludes that in the zone a layer of weathered surface material is presented in the upper part and a colluvial deposit of clay matrix in the lower part. Finally, the spectral acceleration graph is related to the soil type identified and the graph of the different soil strata present in the study area.