Study on Safety Risk Management of Metro Tunnel with Hidden-digging Method Under-passing Existing Railway Station
Wang Gan · Railway Standard Design · 2014
Based on risk assessing theory and numerical simulation method,quantitive risk assessing and special design technique for metro line tunnel under-passing existing railway station are studied. With reference to major project of Dalian metro line 2 Nannan section tunnel under-passing Harbin ~ Dalian express railway station yard,primary assessing and re-evaluation for the risk of the project are conducted through comprehensive expert investigation,AHP and Fuzzy evaluation method. During the assessing process,quantitive evaluation of major risk sources is analyzed with numerical simulation method,and relevant measurements for risk control are proposed according to calculation results to cope with potential risky factors. The practice shows that the combination of qualitative assessing with quantitive simulation suggested by this paper may improve effectively the reliability of risk assessment,the specificity and efficiency of design work so as to control the construct risk,reduce safety accident,decrease economic loss and prevent personnel casualties.