光纤光栅传感技术在滑坡监测中的应用

设计了一种应用于滑坡监测的光纤布拉格光栅传感系统,利用光纤光栅反射波长与应力具有良好线性关系的特性,在滑坡体变形的不安全点安装FBG传感器,获得应变信息,实现对滑坡的监测.在理论分析的基础上,对纯弯曲梁进行了应变测量实验.实验结果与理论分析一致,表明系统具有很好的可靠性和灵敏度.

Fiber bragg grating sensing technology in landslide monitoring

a fiber Bragg grating sensor system used in landslide monitoring is proposed in this paper. Making use of the characteristics that the reflection wavelength of FBG varies with the stress in fine linearity, FBG sensors is installed in the insecurity point of landslide. So access to emergency information, the sensor can re-alize the monitoring of the landslide. Based on the theory analysis, experiments of strain measurement have been done. The pure bending beams were used to verify the feasibility of the system. It has been seen in ex-periments that the characteristics of the measured precisions of good reliability and sensitivity.