Research On Vulnerability Of Urban Gas Pipeline Fire Hazard

In recent years,the city's demand for gas continues to increase,the gas pipeline network also with the rapid development,but also brought a number of security incidents.In this study,the concept of vulnerability was introduced into the study of urban gas pipeline fire,the definition of vulnerability of urban gas pipeline fire hazard body was defined,and the vulnerability assessment index system was constructed,which was evaluated by GIS,AHP and fuzzy mathematics.The evaluation of spatiotemporal vulnerability of city gas pipeline fire disaster-bearing body mainly obtains the following conclusions:(1)Summarize the theory and technology of evaluating the vulnerability of the city gas pipeline fire hazard.On the basis of the comparative analysis of the mainstream evaluation methods,AHP and fuzzy comprehensive evaluation techniques are selected as the core algorithms.At the same time,GIS spatial analysis technology is introduced to integrate the pipeline fire vulnerability assessment algorithm into GIS spatial analysis model.Through the construction of ModelBuilder model tools,the results of the assessment to geographic information visualization technology to show,making the results more visual and intuitive.(2)Based on the selection principle and method of vulnerability assessment index,the assessment system of vulnerability assessment is constructed based on the characteristics of city gas pipeline fire.The evaluation criteria were constructed from four aspects:vulnerability of people,vulnerability of building facilities,and vulnerability of ecological environment and disaster resistance of the area.Fourteen factors,such as population density,building density and regional greening facility density,were selected as the evaluation indexes.(3)Based on the index system of vulnerability assessment of urban gas pipeline fire disaster body,AHP and fuzzy comprehensive evaluation technology are integrated into the spatial analysis modeling tool of GIS.Taking Southwest Petroleum University and its adjacent area as an example,the spatial and temporal distribution of the vulnerability of the fire hazard body in the gas pipeline of experimentation area is calculated.The evaluation index system and evaluation method of city gas pipeline fire the hazard bearing body vulnerability assessment can provide a reference for related research,research from Southwest Petroleum University and the surrounding area of disaster bearing body space-time vulnerability grade map can provide a reference for the relevant departments of the disaster prevention and reduction.