同异反模式的管道土壤腐蚀综合评价

发布时间：2018-06-21 11:26

本文选题：管道 + 土壤腐蚀　；参考：《西安科技大学学报》2017年03期

【摘要】：为了保证能源管道的运输安全,减少管道事故的发生,提高管道土壤腐蚀评价的准确性,选取氧化还原电位、硫酸根离子含量、含水量、p H值和计算的平均腐蚀速率5种评价指标,通过集对理论将管道土壤腐蚀的5种多因素指标与土壤腐蚀等级组成集对,运用熵权计算法确定各指标权重,按照聚类分析思想的择近原则,计算同异反模式的分类系统与待测系统联系度之间的距离,从而辨别待测系统所属的腐蚀级别。以川气东送管道梁平段腐蚀埋片样本数据为例,选用8组数据作为训练样本构造评价模型,另外8组数据作为检验样本,模型对检验样本的评价结果符合现场实际的腐蚀情况,为管道土壤腐蚀评价提供了方法指导。
[Abstract]:In order to ensure the transportation safety of energy pipeline, reduce the occurrence of pipeline accidents and improve the accuracy of pipeline soil corrosion evaluation, the redox potential and sulfate ion content are selected. There are five evaluation indexes of water content and average corrosion rate calculated. Through set pair theory, five kinds of multi-factor indexes of pipeline soil corrosion are paired with soil corrosion grade, and the weight of each index is determined by entropy weight calculation method. According to the principle of clustering analysis, the distance between the classification system of the same, different and antimodel and the connection degree of the system to be tested is calculated, and the corrosion level of the system under test is identified. Taking the sample data of corrosion burying section in Liangping section of Sichuan gas transmission pipeline as an example, eight groups of data are selected as training samples to construct evaluation model, and the other 8 groups of data are used as test samples. The evaluation results of the test samples by the model accord with the actual corrosion situation on the spot. It provides method guidance for pipeline soil corrosion evaluation.
【作者单位】：西安科技大学能源学院;西安石油大学电子工程学院;教育部西部矿井开采及灾害防治重点实验室;
【基金】：陕西省教育厅重点实验室科研计划项目(14JS079) 中国石油科技创新基金研究项目(2014D-5006-0605) 2013陕西省教育厅自然科学专项(2013JK1077)
【分类号】：TE988.2

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