【摘要】 石油天然气管道在遭受钻孔或地下施工意外破坏的过程中 ,会产生强烈振动并沿着管壁向上、下游传播。本文实验了一种在线监测管道破坏状况的方案 ,利用多组传感器测取振动信号 ,通过时 /频域小波分析 ,实现了消噪、特征提取、破坏性振源识别和定位更多还原

【Abstract】 While the oil and gas pipelines are drilled viciously or damaged by underground construction inadver- tently,intensive vibrations would exist on the wall of pipeline and be propagated to extended distance.An on- line supervision arrangement is presented in the paper,in which multi- sensors are equipped.Cancelling noises, extracting features,identifying and positioning the source of vibrations are discussed via the wavelet analyses.更多还原