光纤光栅埋地管道滑坡区监测技术及应用  

Monitoring technology of pipelines using fiber bragg grating and its application in landslide areas

作　　者：陈朋超[1,2] 李俊[2] 刘建平[2] 靳世久[1] 

机构地区：[1]天津大学精密测试技术与仪器国家重点实验室,天津300072 [2]中国石油管道研究中心,河北廊坊065000

出　　处：《岩土工程学报》2010年第6期897-902,共6页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金重点项目(60534050)

摘　　要：长输油气管道沿线的滑坡灾害严重威胁着管道安全。传统滑坡监测手段存在监测组网、数据自动采集困难等问题;光纤传感技术已大量应用于滑坡监测,但是光纤光栅传感技术还未见应用于滑坡的监测中。通过设计的基于光纤光栅传感技术的系列传感器,构建了一套可同时监测管体应变、管土界面压力、滑坡体表面位移以及深部位移的埋地管道滑坡远程监测预警系统。在四川省境内的一特大型滑坡区建立了监测预警示范站。该监测站成功监测到了汶川地震对滑坡及管道的影响。对汶川大地震前后的监测数据分析表明,该光纤光栅监测系统能满足管道滑坡监测的要求,易于布网,成本低,监测精度高,地下长期稳定性好。The safety of long-distance oil and gas pipelines is seriously threatened by landslides.The traditional methods of monitoring are not convenient to establish sensing network and realize automatic data acquisition.The fiber sensing technology has been widely applied in landslide deformation monitoring.However,the fiber brag grating（FBG） sensors haven’t been used in landslide monitoring.Based on the FBG sensors,a remote monitoring and early-warming system for landslides and associated pipelines is put forward.It can monitor pipeline strain,soil-pipeline contact pressure,landslide surface deformation and landslide inner deformation simultaneously.A monitoring station using this system is established to monitor a huge slowly moving landslide and the pipelines affected by it in Sichuan Province.The station collected the deformation data during Wenchuan earthquake successfully.The analysis of monitoring results indicates that because of many advantages such as high flexibility to develop sensing network,low cost,high precision and long-term stability underground,the FBG system is suitable to monitor landslides and associated pipelines.

关 键 词：油气管道 滑坡 监测 光纤光栅 

分 类 号：TD853.34[矿业工程—金属矿开采]