Research On Operation Safety Risk Management Of Qingdao Metro Line 3

With the continuous expansion of the city scale,the urban traffic flow has increased substantially and the traffic congestion problem has become increasingly serious.In this context,subway develops rapidly with its advantages of large transport volume,low energy consumption and fast speed,which effectively alleviates the increasingly tense situation of urban traffic at present.Safety is the lifeline of metro development.Due to the inherent characteristics of underground subway construction,strong sealing,high running speed,frequent starting and stopping,large passenger flow and complex sources,once the accident occurs in metro operation,the loss is serious.Qingdao is committed to building an ecological and civilized city,and has taken subway construction and operation management as an important part of urban development.Based on the statistical analysis of domestic operational accidents,this paper studies the operation safety risk management of Qingdao metro line 3 by using the risk management theory and accident cause theory.The main research work is as follows:(1)This paper expounds the concept and characteristics of metro operation safety risk and analyzes the connotation and process of metro operation safety risk management.This paper introduces accident cause theory,classifies common risk assessment methods,and analyzes their advantages and disadvantages.(2)The accident statistics of more than 200 accidents of metro operation in China in recent years are carried out,and the accident statistics are analyzed from the aspects of accident rank distribution,occurrence time distribution,occurrence space,accident type and influencing factors.On the basis of elaborating the HFACS model and combining the man-machine-management-environment theory to improve it,the cause factor analysis and classification system(MOCFACS model)of subway operation accidents are obtained,and the risk factors of subway operation safety are analyzed from organizational influence,safety supervision,equipment and facilities,human factors and environmental factors.Based on the analysis of the actual operational safety risk of Qingdao metro line 3,the operational safety risk evaluation index system of Qingdao metro line 3 is constructed according to the index system construction principle.(3)This paper introduces the concept and definition of variable fuzzy set theory,and analyzes its applicability.The objective weight of information entropy and the subjective weight are determined by the method of sequence optimization of relative entropy.Based on the classification of metro operation safety risk and the comprehensive relative degree of membership,an evaluation model of metro operation safety risk based on variable fuzzy set theory is constructed.(4)Combined with Qingdao metro line 3 safety risk management status,will build the Qingdao metro line 3 security risk evaluation index system and based on the theory of variable fuzzy sets,the subway operation safety risk evaluation model is applied to the Qingdao metro line 3 safety risk evaluation,analyzes the evaluation results,and proposes the corresponding risk control measures.This paper makes a statistical analysis of domestic operational safety accidents,and applies the improved HFACS model,or MOCFACS model,to the study on the operational safety risk management of Qingdao metro line 3,which can provide a reference for the study on the operational safety risk of metro.