Risk Assessment On Operational Safety Of Urban Railway Traffic

With the accelerated process of urban modernization, the world is facing such a problem; the city ground transportation cannot meet the growing travel requirements. Therefore, urban rail transits have come into being. Urban rail transit is a fast, safe and comfortable. With the incomparable advantages of the other urban public transport. However, we still need to clearly recognize that the urban rail transit still has security risks, which still needs further city rail transportation to conduct a thorough evaluation; At the same time, the requirements of urban rail transit is increased by the increasing traffic, so the urban rail transport operator the status urgent need to improve, and take the appropriate measures by the operators to find the problem to solve the problem.Evaluation on urban traffic safety is an important stage of the whole traffic management, which plays a role as promoting traffic by appraising. The key to scientific evaluation is to establish a suitable index system and to adopt a reasonable evaluation method.The paper, based on the theory of system safety engineering, do the research about the safety evaluation system of home and abroad urban rail transit operations, combined with the current Chengdu subway line operation, proceed to the four elements of urban rail transit system vehicles, people, environment, management analysis, and create urban rail traffic safety evaluation index system and evaluation model.Paper the current Chengdu Metro Line1operations as an example, the risk evaluation index system and evaluation model to create the safety of subway operation, using the method of combining the analytic hierarchy process and multi-level extension evaluation model to determine the Chengdu Metro Line1line level of operational risk, security risks in Chengdu subway operators to work out improvements and management programs, in order to achieve the purpose of risk assessment, provide a reference for in-depth study of the safety risk assessment of urban rail transport operators.