Laboratory monitoring of transient phenomena with geohpysical techniques.
The research is carried out in collaboration with the Politecnico di Torino. The use of non-invasive geophysical techniques (both seismic and electrical) in the laboratory have been evaluated. An innovative equipment was designed for that purpose studying evolutionary processes generated by changes in hydraulic, chemical or mechanical conditions and such as to induce the occurrence of inhomogeneities in the sample structure. A laboratory Thermal Box has also been developed to monitor, by means of electrical resistivity measurements, the evolution and thermal gradients developed by the propagation of heat tests in geological media designed to simulate the use of geothermal heat excangers and thermal storage systems. In addition, the application of electric tomography as a monitoring and analysis tool of transient phenomena has been evaluated: spreading of salt solutions in the terrain both in homogeneous conditions that inhomogeneous, solid and pollutants transportation tests in artificial hydraulic and in natural channels and heat propagation tests in saturated and non-saturated geological materials.
•"IMAGING HETEROGENEITIES WITH ELECTRICAL IMPEDANCE TOMOGRAPHY: LABORATORY RESULTS" A. Borsic, C. Comina, R. Lancellotta, S. Foti e G. Musso (2005) Geotechnique, vol. 55, number 7, pp 539 - 547.
• "MONITORING TRANSIENT HYDRO-MECHANICAL PROCESSES IN POROUS MEDIA USING ELECTRICAL RESISTIVITY TOMOGRAPHY" C.Comina, Cosentini R.M., Della Vecchia G., Foti S. and Musso G. (2009) in Pure Mathematics and Applications, Volume 20, Issue No. 1-2. ISSN: 1218-4586.
• "FAST ERT TO ESTIMATE POLLUTANTS AND SOLID TRANSPORT VARIATION IN WATER FLOW: A LABORATORY EXPERIMENT" L. Sambuelli and C. Comina (2010) in Bollettino di Geofisica Teorica ed Applicata, Vol. 51, n.1, pp 1 - 22.
•"LABORATORY SCALE RESISTIVITY MONITORING OF THERMAL FLOWS - ANALOGICAL AND NUMERICAL SIMULATIONS UNDER WATER FLUX CONDITIONS" Nicolò Giordano, Cesare Comina and Giuseppe Mandrone, 21st European Meeting of EAGE - Near Surface Geoscience, Torino, 6 - 10 September 2015.
• "LABORATORY SCALE GEOPHYSICAL MEASUREMENTS AIMED AT MONITORING THE THERMAL AFFECTED ZONE IN UNDERGROUND THERMAL ENERGY STORAGE (UTES) APPLICATIONS" N. Giordano, C. Comina, G. Mandrone, accepted in Geothermics.