|
Currently metro rail as an important form of transportation, with a large capacity, no noise, saves floor space and other advantages, China's Beijing, Tianjin, Shenzhen and other cities, are speeding subway construction. Since the general location of subway construction in population, building dense urban subway construction in order to reduce the impact on the urban environment, the major cities metro tunnel construction commonly used shield construction. But the metro shield tunnel construction process more complex geological conditions faced in recent years, Metro Shield Tunnel accident frequency has seriously affected the normal operation of subway construction. Accident-prone partly because the construction of a large number of risk factors exist objectively, but more important reason is that construction risk management, especially in the construction work, there are many risk monitoring is insufficient to fully play the role of surveillance and control risks. Therefore, in order to effectively prevent the risk of metro shield tunnel construction process generates the need to strengthen the construction accident risk monitoring. Based on the analysis stage, Subway Construction Monitoring theoretical study and practical work problems, based on the introduction of failure modes, effects and criticality analysis (FMECA) to analyze the process of metro shield tunnel construction risks and dangers, guidance Construction risk monitoring work. First, the metro shield construction process as a \Secondly, the metro shield tunnel construction process FMECA analysis, identify the primary failure mode of the construction process, evaluate the impact of failure modes, harmfulness size and determine the need to focus on monitoring the potential failure modes. From human, machine and environment, failure mode analysis of four aspects of management and lead to risks arising cause of the accident. On this basis, construct metro shield tunneling risk monitoring indicator system, the development of effective \Subway Construction risk monitoring solution should monitor what objects and how to monitor the two issues, the integration of monitoring indicators set, monitoring information collection, monitoring, information processing series of processes to form a more perfect Subway Construction risk monitoring information system. Finally, combining the above analysis case studies illustrate the usefulness of risk monitoring guide the actual construction work, to play its role in risk prevention and control.
|