Research on Quantitative Classification Method of Risk in Operating Subway Line

In order to reflect safety levels of subway line operation system in China quantitatively,based on analysis of historical operating data,accident and failure information related to safe operation closely was selected.In view of subway operation safety and reliability,quantitative risk evaluation indicator system was established by using the system engineering method.According to the risk theory,a safety situation quantitative classification model of subway system was built.Finally,a case study on a certain subway line was made using.The results show that the level of operation risk of the subway line is 3 and it is consistent to the actual situation,and that operating enterprise strengthening publicity,passengers education and maintenance of vehicle system and communication system should be the focal point of the operating enterprise's work.