摘要
介绍了分布式光纤形变探测管的结构及探测原理,推导了光纤应变与分布式光纤形变探测管沉降量的理论关系,测定了试验用传感光纤的弹性系数,基于DiTeSt-STA202分布式光纤传感分析仪进行了分布式光纤形变探测管土体形变监测的试验研究。研究结果表明,分布式光纤形变探测管应用于实时土体形变监测具有良好的实用性。
The structure and the detecting principle of a new type deformation detecting tube based on distributed optical fiber sensing are briefly introduced.The theory formula,i.e.,the relationship between the sensing fiber＇s strain and the settlement of the new deformation detecting tube is given.The elasticity coefficient of the sensing fiber which is used in the following experiment is experiment determined.The experiment which is to monitor the soil body＇s deformation by the new deformation detecting tube based on distributed optical fiber sensing is conducted.And the experiment is based on DiTeSt-STA202,a distributed optical fiber sensing analyzer.The study confirms that the new deformation detecting tube based on distributed optical fiber sensing proposed is practical to be used in real-time monitoring the deformation of the soil body.
出处
《光纤与电缆及其应用技术》
2010年第1期19-22,共4页
Optical Fiber & Electric Cable and Their Applications
基金
国家水利部"948"引进国际先进技术基金资助项目(200608)
关键词
分布式光纤传感
探测
形变
土体监测
distributed optical fiber sensing
detecting
deformation
monitoring of the soil body
