光纤传感技术在锚杆轴力监测中的应用  

Application of fiber optical sensing technology to monitoring axial forces of anchor bolts

作　　者：林传年[1,2] 刘泉声[3] 高玮[3] 肖春喜[3] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]湖北省沪蓉西高速公路建设指挥部,湖北恩施445000 [3]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉430071

出　　处：《岩土力学》2008年第11期3161-3164,共4页Rock and Soil Mechanics

基　　金：交通部西部交通建设科技项目“沪蓉国道主干线龙潭特长隧道特殊地质条件下的关键技术研究”(No.200431800028)

摘　　要：在简述了光纤Bragg光栅传感器基本工作原理的基础上,通过沪―蓉―西高速公路龙潭隧道支护锚杆轴力监测的工程应用,探讨研究了光纤传感技术用于岩土工程监测的几个重要环节——传感器选择、传感器安装、传感器标定及传感器埋设。通过现场监测获得了复杂地质条件下特长隧道支护锚杆轴力的变化特性,为光纤传感技术在岩土工程监测领域的应用积累了一定的经验。The basic principle of fiber Bragg grating sensor is described. Through engineering application of fiber Bragg grating sensor to monitoring axial forces of anchor bolts for Longtan tunnel of Hu-Rong Expressway West Section, some important aspects of fiber optical sensing technology applications to geotechnical engineering monitoring, which are selection of sensors, installation of sensors, calibration of sensors and embedding of sensors, et al, are discussed. Through local monitoring, the characteristics of axial forces of anchor bolts are obtained. And some useful experiences with application of fiber optical sensing technology to geotechnical engineering are summarized.

关 键 词：光纤传感技术 光纤BRAGG光栅 隧道 锚杆轴力 监测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]