| The subway construction project is characterized by special geographical location,large scale,large investment,close relationship with surrounding environment and long construction period,which decides that there are many uncertain factors,low safety reliability and various types of accidents in the subway engineering.Once a subway safety accident occurs,the consequence is usually mass death and mass injury,which causes bad influence of public opinion.Based on the theoretical system of safety risk management,this paper studies the prediction and control of safety accidents in the construction process of Beijing subway tunnel in detail,mainly including the following aspects.Secondly,the theoretical system of risk management is detailed,and the basic processes of risk management,such as risk identification,risk assessment and risk response,are analyzed and studied to provide theoretical support for the study of Beijing subway safety risk.Thirdly,based on the characteristics of the construction of the interval tunnel between Shangqingqiaonan station and Shangqingqiao station of Beijing subway line 19,the risk identification method of combining work breakdown structure method and engineering risk decomposition method is proposed to analyze and summarize the factors related to safety risk in the construction of subway interval tunnel.Then,BP neural network intelligent algorithm is used to quantify the frequency of safety accidents in subway tunnel construction and predict the frequency of possible safety accidents in this station.Finally,the countermeasures of safety accidents are established,and corresponding Suggestions and measures are provided for the subway accident based on geological conditions and hydrological conditions,so as to improve the safety standard of subway tunnel construction. |
PDF Full Text Request