会议论文详细信息
2nd International Symposium on Application of Materials Science and Energy Materials
Study on corrosion rate of buried gas steel pipeline in Nanjing based on the GM(1, N) optimization model
材料科学;能源学
Liao, Di^1 ; Zhang, Lijing^1 ; Tao, Gang^1
School of Nanjing Tech University, Nanjing, China^1
关键词: Buried steel pipeline;    Corrosion mechanisms;    Corrosion rate models;    Grey correlation analysis methods;    Optimization method;    Optimization modeling;    Pipeline protection;    Reference values;   
Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022025/pdf
DOI  :  10.1088/1757-899X/490/2/022025
学科分类:材料科学(综合)
来源: IOP
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【 摘 要 】

In view of the complex and fuzzy corrosion mechanism of buried gas steel pipelines, the grey correlation analysis method is used to find out the main factors affecting the corrosion rate and sort them by association degree. And then the corrosion rate model of buried natural gas steel pipeline is established based on GM (1, N) model and OGM (1, N) (an optimization method for the GM (1, N)) model. Results show the main factors affecting the corrosion rate of buried steel pipelines in Nanjing are service life, pipeline protection measures, soil resistivity and stray current. Compared with the GM (1, N) model, the accuracy of OGM (1, N) model is greatly improved. OGM (1, N) model can effectively simulate pipeline corrosion rate considering multiple factors, which has a certain reference value for the study on residual life of buried gas steel pipelines.

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