Disaster Risk Assessment of Gas Tunnel Construction Based on Fuzzy Comprehensive Evaluation Method
There is danger of gas explosion and gas outburst in the process of tunnel excavation in gas area,and the possible danger should be predicted.Based on a highway tunnel project,AHP is used to evaluate the tunnel grade,and fuzzy comprehensive evaluation method is used to analyze the probability of tunnel gas risk.The results show that the maximum weight value of the tunnel is 0.390.The rating of classification evaluation is 74.89.The gas disaster control measures should be formulated according to the grade of high gas tunnel during construction.Through the fuzzy comprehensive evaluation of tunnel gas disaster risk,it is confirmed that the construction risk of the left line tunnel is level 4,with larger probability of danger,and a gas disaster may happen possibly here.
tunnel constructionfuzzy comprehensive evaluationdisaster evaluationevaluation indexrisk analysisprevention and control suggestions
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