Distributed temperature sensing for identifying water saturated zones using active heating methods: a feasibility study
Description
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.
Files
Steps to reproduce
The data were obtained from laboratory experiments on a cement-grouted mock-bolt specimen instrumented with a heating cable and a distributed fibre-optic sensing cable. Active heating was applied at fixed power levels, and temperature responses along the bolt were measured using a Rayleigh-based phase-noise-compensated optical frequency-domain reflectometry (PNC-OFDR) system. Water was introduced at predefined locations to simulate high-saturation zones around the grouted bolt. Temperature rise (ΔT) profiles were analysed to identify thermal anomalies associated with water-saturated regions. The experiments can be reproduced by following the same specimen preparation, heating protocol, sensor configuration, and data processing procedures.
Institutions
- Kyoto Daigaku
- Shimane Daigaku