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.本数据集收录了针对水泥灌浆模拟锚杆试样开展的基于主动加热式分布式光纤传感（active heating–based distributed fibre-optic sensing, AH-DFOS）实验室试验的温度变化（ΔT）测量数据。试验中施加了可控加热工况，并采用基于瑞利散射的相位噪声补偿型光频域反射仪（Rayleigh-based phase-noise-compensated optical frequency-domain reflectometry, PNC-OFDR）系统记录了分布式温度响应。随后在预设位置引入水体以模拟饱水区域。该数据集可用于分析与地下水赋存相关的热响应特性，同时可评估不同光纤电缆配置在灌浆锚杆系统中的性能表现。