Vibration Characteristics and Location of Buried Gas Pipeline under the Action of Pulse Excitation

In this paper, the attenuation of sound waves in underground gas pipelines and vibration characteristics are studied, feasibility effectiveness acoustic measurement PE verified. equation an transmission pipeline is derived based on propagation itself. order to verify experimental results, we conducted test air model verified through under action pulse excitation. Then, detect background noise, design scheme according buried pipeline, select site for field test. process, collected data obtained spectrum diagram by fast Fourier transform (FFT). By analyzing results spectrogram, find that signal can penetrate medium composed pipe formation, but amplitude will be sharply attenuated. At same time, size peak spectrum, determine location pipe. summary, tests, equations wave proposed. It has important practical application value safety monitoring positioning pipeline.