摘要
Abstract
To address the limitations of traditional monitoring methods for urban rainwater and sewage pipelines—includ-ing large blind zones,delayed data processing,and difficulty in capturing long-distance continuous deforma-tion—a distributed optical fiber sensing technology is adopted,and a signal separation and extraction strategy under multi-physical-field coupling interference is proposed.Taking the cross-construction between a new pipe-jacking project and an existing rainwater-sewage pipeline as a case study,strain-sensing and tempera-ture-compensation optical cables were laid along the pipeline,and an automated monitoring system based on an Internet of Things cloud platform was established to enable distributed and real-time monitoring of both strain and temperature.The optical fiber technology successfully identified pipeline responses induced by vari-ous operational conditions,including pipe-jacking construction,pressure adjustments,and water convey-ance.Compared with conventional methods,this technology offers advantages such as high sensitivity,strong anti-interference capability,corrosion resistance,and long-distance real-time monitoring.Moreover,the strain-temperature coupling effect can be effectively mitigated through temperature compensation and algo-rithmic calibration.关键词
光纤技术/实时连续监测/雨污水管道Key words
optical fiber technology/real-time continuous monitoring/rain and sewage pipelines分类
建筑与水利
