In this study, for the first time in Iran and especially in the northern regions of the country, risk assessment was performed in oil transmission lines. For this purpose, a combined approach based on the analytical hierarchy process (AHP) and fuzzy methods were used. Based on this and in the first stage, eight main criteria of distance from the oil transmission line, distance from faults, distance from springs, slope percentage, aspect, geo units, distance from landslide and creep, and stream density were identified. In the second stage, using the AHP method, the research problem became hierarchical. In the third stage, by performing pairwise comparisons between the categories of the main criteria, weights and incompatibility coefficients were obtained for each pair of comparisons. Finally, for the weighted maps' overlay, a fuzzy overlay function in the ArcGIS software was used. According to the final map, 9.39% of the area is in the "very high" risk category and 21.95% in the "high" category. Accordingly, the southern areas of the study area have the highest risk levels, and the southern and eastern areas of the mine located in the study area need more attention and review of the method of extraction from the mine.

在这项研究中，首次在伊朗，尤其是在该国北部地区，对输油线路进行了风险评估。为此，使用了基于层次分析法 (AHP) 和模糊方法的组合方法。在此基础上，在第一阶段，确定了与输油线路的距离、与断层的距离、与泉水的距离、坡度百分比、坡向、地质单元、与滑坡和蠕变的距离以及河流密度等八个主要标准。在第二阶段，使用层次分析法，研究问题变得分层。在第三阶段，通过在主要标准的类别之间进行成对比较，获得每对比较的权重和不相容性系数。最后，对于加权地图的叠加，使用了 ArcGIS 软件中的模糊叠加函数。根据最终地图，该区域的 9.39% 属于“非常高”风险类别，21.95% 属于“高”类别。相应地，研究区南部地区的风险等级最高，位于研究区的矿山南部和东部地区需要更多的关注和对矿山开采方法的审查。