采用光纤Bragg光栅(FBG)传感器监测了巷道模型的掘进过程。利用FLAC3D软件对巷道模型进行了掘进过程的应力分析,根据应力分布情况在巷道模型中布设了15个三维应变FBG传感器和3个温度FBG传感器,通过四通道SM125解调仪对传感信号进行系统解调以及数据存储。该传感系统测量精度高,检测的应力变化与FLAC3D软件模拟结果吻合性好,表明FBG传感器在土木工程的监测中有较好的应用前景。 The tunneling model was monitored by fiber Bragg grating (FBG) sensor. FLAC3D software was used to analyze the roadway tunneling process. According to the stress distribution, 15 three-dimensional strain FBG sensors and three temperature FBG sensors were laid out in the roadway model. The four-channel SM125 demodulator was used to carry out the system Demodulation and data storage. The sensing system has high measuring accuracy and the measured stress changes are in good agreement with the simulation results of FLAC3D software, indicating that the FBG sensor has a good application prospect in the civil engineering monitoring.