ISC'2 experimental site investigation and characterization - Part 2: from SH waves high resolution shallow reflection to shallower GPR tests

摘要

The in-situ investigation and characterization of ISC'2 experimental site comprised the application of several geophysical borehole, penetration and surface methods, namely S waves high resolution shallow reflection (SHRR), ground penetrating radar (GPR), P and S waves seismic cross-hole (CH), down-hole (DH), refraction, electrical resistivity, as well as geotechnical tests, namely SPT, CPT, DMT, among others. The site, located within the campus of Faculty of Engineering of the University of Porto (FEUP), is geologically formed by an upper layer of heterogeneous residual granite soil overlaying rather weathered granite contacting a gneissic migmatite. Direct and indirect results from some of the referred surveys are compared between them and with some of the available geological and geotechnical information, in particular hereby (Part Ⅱ), those obtained from SHRR, GPR, and CH seismic tests. The integration of the available information was then used to build a tentative geological interpretation model. One of the objectives of this component of the global study, hereby presented, was to evaluate the possibility of obtaining valid information from a single technique, particularly, S waves shallow reflection.