Application Research on the Model of Urban Natural Gas Pipeline Leakage and Diffusion Law
Through numerical simulation method,combined with the actual situation in pipeline inspection,natural gas leakage of in medium-pressure pipelines in sandy loam,clay and silty sand is simulated,and the field measurement is compared.Then through the data normalization process,the result shows that there are differences in the diffusion rule of natural gas in different soil porosity.The smaller the soil particle-size,the smaller the diffusion range of gas leakage.The concentration of natural gas in the soil near the leakage point shows nonlinear attenuation law,which provides reliable theoretical support for pipeline inspection and assessment.
gas pipelinesnumerical simulationleakagepipeline inspection
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