层次分析法城镇燃气管道网格化风险评价

Risk Evaluation of Urban Gas Pipeline Grid by Analytic Hierarchy Process

介绍层次分析法建模确定权重的4个步骤。通过网格化技术将燃气管道进行网格划分,建立燃气管道网格化风险评价体系。对评价体系中的指标通过层次分析法进行权重的确定,最终对所有网格进行网格化风险评价。将所有网格按照计算得到的风险值排名,得到网格风险值与网格风险排名的曲线图,找到曲线从剧烈变化到平稳的网格排名拐点。风险值大于该拐点对应的风险值的网格为高风险网格,在日常巡视和管理中需对这些网格进行重点关注。

The four steps of AHP modeling to determine the weight are introduced. The gas pipeline is meshed by grid technology,and the grid risk assessment system of gas pipeline is established. The weights of the indicators in the assessment system are determined by AHP,and finally the grid risk assessment is carried out for all grids. All grids are ranked according to the calculated risk value,and the graphs of grid risk value and grid risk ranking are obtained,and the inflection point of the grid ranking where the curve changes sharply to smooth is found. The grid with risk value larger than the risk value corresponding to the inflection point is a high risk grid,which should be paid more attention to in daily inspection and management.