城市燃气管道失效耦合分析

Coupling Analysis of City Gas Pipeline Failure

将影响城市燃气管道失效的一级指标称为影响因素,二级指标称为影响因子。从人(人为因素)、机(管道及设备因素)、管(管理因素)和环(环境因素)4类影响因素分析管道失效影响因子耦合作用机理;基于系统动力学(SD)方法,分析管道各类因素内部因子的同质耦合关系。据此建立耦合评价指标体系,体系中有"人、机、管、环"4类一级指标,各一级指标下有若干二级指标,用G2法和熵权法相结合的综合权重法为各指标赋权;构建耦合度模型和耦合协调度模型分析管道4类影响因素的异质耦合程度。进行实例分析。

The first-level indicators affecting the failure of city gas pipelines are called influencing factors, and the second-level indicators are called impact factors. The coupling mechanism of city gas pipeline failure impact factors is analyzed from 4 kinds of influencing factors, including human （human factors）, machine （pipeline and equipment factors）, management （management factors） and environment （environmental factors）. Based on system dynamics （SD） method, the homogeneous coupling relationship of internal factors of various influencing factors of pipelines is analyzed. Based on this, a coupling evaluation indicator system is established. There are 4 kinds of first- level indicators including people, machine, manage- ment and environment in the system. There are several second-level indicators under each first-level indicator. The comprehensive weight method, which combines G2 method and entropy weight method, is used to give weight to each indicator. The coupling degree model and coupling coordination model are built to analyze the heterogeneous coupling degree of 4 kinds of influencing factors of pipelines. The case analysis is performed.