Risk Management Study Of Tunnel Excavation In Muddy Stratum Of City

Major cities have begun the construction of large-scale traffic network,while major cities are solving the problem of urban tunnel excavation.On the same issue,the main purpose is to supplement subway traffic and relieve traffic congestion.By analyzing the current.The research achievements of domestic academic circles have found that the construction of tunnels in muddy strata in cities in China is under way at present.The application of safety prevention and control methods relies too much on engineering analogy and industry standards,lacking Risk assessment system and corresponding countermeasures in this environment.And detrimental to engineering risk prevention and control.Through collecting the existing research data at home and abroad,this paper sorted out the problems of risk management in the construction of tunnels in muddy strata in cities.Based on the past experience and relevant information,collecting the risks and their sources are arranged in a table,six kinds of risks in the construction of tunnels in muddy strata in cities are sorted out,including collapse,water gushing and mud gushing,fire gas explosion,electric shock,land subsidence,and deformation of surrounding buildings or structures.Through use consultation experts,questionnaires,interviews with the public and other risk identification methods,find out the risk factors of the construction of tunnels in muddy strata in the city,establish a risk index system,and then use the analytic hierarchy process and fuzzy evaluation method to establish a risk evaluation system.Taking the tunnel excavation in the muddy stratum in the city as the prototype,the risk analysis is carried out,and the risk control measures are put forward.At the same time,the risk control measures are demonstrated with a case study.