Distributed temperature sensing for identifying water saturated zones using active heating methods: a feasibility study

This dataset presents temperature change (ΔT) measurements from laboratory active heating–based distributed fibre-optic sensing (AH-DFOS) experiments on cement-grouted mock-bolt specimens. Controlled heating was applied, and distributed temperature responses were recorded using a Rayleigh-based phase-noise-compensated optical frequency-domain reflectometry (PNC-OFDR) system. Water was introduced at predefined locations to simulate water-saturated zones. The data can be used to analyse thermal responses associated with groundwater presence and to evaluate the performance of different fibre-optic cable configurations in grouted rock-bolt systems.