针对滑坡深部位移监测目前存在的问题，设计光纤光栅(FBG)应变管。采用将裸FBG直接粘贴于应变管的方式制作FBG应变管，阐述了FBG应变测量原理和采用FBG应变管的滑坡深部位移计算方法。根据FBG应变管的性能测试,FBG应变管的应变灵敏系数为0.58 pm/10-6。现场实验结果显示FBG应变管的测量结果与测斜仪的测量结果非常吻合。

A fiber Bragg grating (FBG) strain tube, which is fabricated by affixing bare fiber grating to a strain tube, is designed to solve existing problems in deep displacement monitoring of pipeline landslide. Strain measurement principle of fiber Bragg grating and deep displacement calculation method of landslide measured by FBG strain tube are presented. According to results of performance test, strain sensitive coefficient of a FBG strain tube is 0.58 pm/10-6. According to field trials, measurement results of FBG strain tube are mostly agreeable with these of declinometer.