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李宝荣 １，王建国 １，王立涛１，张建昌２，刘长征 ３，李秀峰３，何仁洋３
（１．长庆油田分公司第三输油处，宁夏银川 750006；２．西安石油大学石油工程学院，陕西西安 710065；３．中国特种设备检测研究中心，北京 100013）
摘要：在详细分析影响埋地钢质管道腐蚀影响因素的基础上，建立了基于模糊评判理论的埋地钢质管道腐蚀防护状况综合评价模型。通过合理选取影响管道腐蚀的典型因素，依据一定的分级评价标准，建立评价集。利用层次分析法和灰色关联分析理论确定影响因素的权重大小，通过隶属函数法建立单因素评价矩阵，实现对各影响因素的模糊化处理。在综合考虑各影响因素权重的基础上，选取适当的模糊算子，通过定量分析的方法对管道的腐蚀防护状况进行评价。实践表明：评判结果与直接开挖检测结果一致，建立的模糊综合评价系统具有一定的工程应用价值和可靠性。
关键词：模糊综合评判；管道腐蚀防护；层次分析；灰色关联；隶属函数
Comprehensive Evaluation Technology for Corrosion Protection of Buried Steel Pipeline
LI Bao-rong1,WANG Jian-guo1,WANG Li-tao1, ZHANG Jian-chang2, LIU Chang-zheng3,LI Xiu-feng3,HE Ren-yang3
(1. The Third Oil Transportation Plant of Changqing Oil-field Company of PetroChina, Yinchuan 750006,China;2.Xi’an Shiyou University, Xi’an 710065,China;3.China Special Equipment Inspection and Research Center , Beijing 100013,China)
Abstract: The comprehensive evaluation model of corrosion protection of buried steel pipeline is based on the fuzzy evaluation theory by analyzing corrosive factors affecting buried steel pipeline in detail. According to the grading and evaluating criterion, an evaluation set is established by properly selecting typical corrosive factors affecting pipeline. The analytical hierarchy process (AHP) and grey correlation theory are applied in determining the weights of affecting factors, and the method of membership grade function is used to establish a single factor evaluation matrix, in which every factors can be fuzzed. Finally, a quantitative analysis method is applied to evaluate the corrosion protection status of pipeline by selecting a proper fuzzy operator based on comprehensive consideration of the weight of every factor. Engineering application indicates that the result of comprehensive evaluation is in concordance with direct excavation detection, which proves the system of fuzzy comprehensive evaluation to be practically valuable and is reliable as well.
Key words: fuzzy comprehensive evaluation; corrosion protection for pipeline; analytical hierarchy process; grey conjunction; membership function |
