This thesis research project was conducted as part of the 24-month PRIN initiative titled "THERMO- and HYDRO-mechanical monitoring and modeling of jointed ROCKS: a national SITE LABORATORY network (THEROCKLAB)." Starting in January 2024, THEROCKLAB involves multiple universities, including Politecnico di Torino. Its objective is to employ multi-sensor integrated monitoring strategies and numerical modeling to study thermo- and hydro-mechanical processes in fractured rock masses for early warning applications. The project covers five unstable rock masses across the Alps and the Apennines: the field-scale data of this thesis is focused on the monitoring from AcutoFieldLab in Acuto, Lazio. The research project focuses on the integration of monitoring data with numerical models to enhance the understanding of rock mass behavior and on the possibility of using resonance frequency and seismic velocity changes as early warning indicators.