反射计
管道运输
泄漏(经济)
检漏
光时域反射计
光纤
泄漏
温度测量
光缆
渗透(HVAC)
声学
计算机科学
光纤传感器
材料科学
电子工程
环境科学
工程类
时域
机械工程
复合材料
环境工程
物理
光纤分路器
电信
量子力学
计算机视觉
经济
宏观经济学
作者
Haojie Li,Hong‐Hu Zhu,Dao-Yuan Tan,Bin Shi,Jianhua Yin
标识
DOI:10.1016/j.tust.2023.105065
摘要
This paper presents a feasibility study on leak detection of buried pipelines using the active distributed temperature sensing (ADTS) method. The proposed solution involves the use of actively heated fiber optic (AHFO) cables arranged parallel to the pipelines, allowing for changes in the thermal properties of the surrounding soil to be captured and correlated with leakage accidents. This problem was modeled as an infinite cylindrical or linear heat source buried in porous media with seepage flowing inside. AHFO sensors were designed to verify the proposed method through scale-reduced model tests. The fiber optic temperature sensing technology based on optical frequency domain reflectometry (OFDR) was used to continuously monitor temperature profiles. The test results demonstrate that the ADTS solution has greatly improved the accuracy of passive temperature sensing methods. The feasibility of the solution was evaluated regarding different levels of leakage estimation, namely, identification, location, and quantification. This paper presents the first attempt to monitor the infiltration process associated with pipeline leaks using the AHFO-OFDR technique, which is a reliable method for structural health monitoring of underground pipelines.
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