Study on Stability Evaluation of Tunnel Excavation in Complex Geological Structure Area
Ten indexes were selected to evaluate the stability of the excavated tunnel,and the weights of each index were obtained by the meth-od of combination weighting.The surrounding rock was the most important factor affecting the stability of the tunnel.The fuzzy mature-element method is used to evaluate the excavation stability of 10 mileage sections of the tunnel.The evaluation results show that 8 mileage sections are of class I stability and 2 mileage sections are of class II stability,and the evaluation results are in good agreement with the field results.
Combination empowermentTunnel excavationFuzzy matter-elementStability class
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