Evaluation And Index Analysis Of Operation Safety Risk In Xi’an Metro

In the "Belt and Road" construction process,as an important node city,Xi’ an has been accelerating its urbanization process,and the continuous construction of the subway has also ushered in huge opportunities and challenges.At the end of 2020,Xi’an has three subway lines No.5,No.6 and No.9 on the original four subway lines.With the increase of lines,the demand for management resources and management methods of subway stations is also increasing.At present,Xi’an Metro is in the bottleneck stage of its development.The increase of subway stations,the disadvantaged position of the subway itself,and the current situation of gathering and dispersing large passenger flows during holidays put forward higher requirements for subway operation risk management.Nowadays,post-analysis of subway operation risk management at home and abroad has been turned into pre-prevention,to identify subway operation risk levels,improve unsafe factors,enhance management strength and management methods,and reduce or avoid subway operation accidents and subway accidents.Based on pre-prevention and risk management theory,this paper conducts a systematic subway operation safety risk assessment and comprehensive analysis of risk indicators.Collecting indicators from the four aspects of personnel,equipment,management and environment of subway site elements,using explanatory structure models,clarifying the hierarchical relationship among the main risk factors,and sorting out a more comprehensive subway operation risk indicator system.Then Based on the extensional matter-element evaluation model,combined with the weight calculation method of subjective and objective fusion,a perfect subway operation risk evaluation model is constructed.Taking Xi’an Metro Y subway station as an example,the overall safety level is within a relatively safe range.Finally,the Anylogic software is used to establish a dynamics simulation model of the subway operation system,and the matter-element extension evaluation model is supplemented and verified on the basis of considering the system shock and the mutual influence of factors.Combining the parameter sensitivity analysis experiment,conduct a sensitivity-risk matrix analysis of each risk index,formulate measures of different levels in different areas of the matrix,and propose targeted opinions from the management design of the macro-organization structure,which can improve the deficiencies of daily management and control The level of risk of subway operation has greatly improved the level of subway operation and management.