摘要
文章介绍了分布式光纤传感技术在市政排水管道结构健康监测中的应用.基于布里渊效应的分布式光纤传感技术BOTDR,可以同时测量光纤沿线的应力和温度分布情况.通过数据特征分析,可以诊断出应力异常、沉降变形、裂缝病害、泄漏渗漏等多种管道结构异常事件.分布式光纤传感技术具有无源本质、恶劣环境下使用寿命长、覆盖范围广、综合成本低等优点,在市政管道监测中具有较高的应用前景.
Abstract
The article introduces the application of distributed fiber optic sensing technology in the health monitoring of municipal drainage pipeline structures.BOTDR,a distributed fiber optic sensing technology based on Brillouin effect,can simultaneously measure the stress and temperature distribution along the fiber optic path.Through data feature analysis,various pipeline structural abnormal events such as stress anomalies,settlement deformation,crack diseases,and leakage can be diagnosed.Distributed fiber optic sensing technology has the advantages of passive nature,long service life in harsh environments,wide coverage and low comprehensive cost,and has high application prospects in municipal pipeline monitoring.
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