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( Paolo Allasia ),( Giorgio Lollino ),( Daniele Giordan ),( Danilo Godone ),( Aleksandra Wrzesniak ),( Marco Baldo ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
In the field of geohazards, the monitoring networks are often used to control and manage phenomena related to the engineering geology environment. Recently, the development of technologies to measure surface displacement has been observed, especially remote sensing techniques. However, the measurement of superficial displacement does not always fully describe the kinematic of the phenomena. Sometimes, the surface measurements represent a sum of deformations developed in the subsoil at different depths and with a complex distribution that can change also with time. In this field, we developed a robotized monitoring system to measure horizontal deep-seated ground deformations in a borehole. This instrument performs automatically inclinometric measurements (many per day), using standard approach (double readings 0/180°) for all the lengths of the borehole (up to 120 meters) using a single inclinometric probe. This system was extensively installed within landslide monitoring networks in the Alps. It allowed obtaining the results in terms of: i) the definition of the deep and surface kinematics of the observed phenomena ii) the evaluation of the displacement accelerations iii) the relationship between rainfalls/snow melting and water table levels.Recently, our system was installed in the geotechnical context to monitor the relationship between excavations with TBM and deep-seated ground deformation measurements. The elements at risk were Italian architectural heritages like the Roman Colosseum and the Basilica of St. Stephen. The main goals of this application was to compare the expected and designed deep-seated ground deformations and to monitor the potential interaction between subsoil deformations and historical monuments on the ground.