Propagation Characteristics of Vibration Signals Caused by Leakage of Buried Gas Pipelines
The airflow resulted from the leakage of buried gas pipeline would cause the surrounding soil to vi-brate.By means of measuring acceleration,the attenuation of vibration signals in soil can be measured to judge whether there is leakage.In the paper,the leakage of buried gas pipeline was simulated and acceleration sensors were used to measure the acceleration signals in case of leakage at apertures of 2 mm,4 mm and 6 mm,and pres-sures of 1.5 MPa,2.5 MPa and 3.5 MPa,so that the propagation characteristics of acceleration signals in different soil media under different leakage pressures were analyzed.Then,combined with ABAQUS,the acceleration at-tenuation in different soil media was simulated.The results show that the peak acceleration signal exhibits exponen-tial attenuation in soil,which agrees well with the test results.The research findings can help guide the selection and installation of leakage monitoring sensors for buried gas pipelines and the operation of gas pipelines to prevent accidents from occurring.
gas pipelineleakage monitoringaccelerationvibration characteristics
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万方数据
维普
