Abstract：
Joint development is one of the main factors leading to the collapse of tunnels. Considering the adverse combination of surrounding rock joint surfaces, the influential factors regarding landslides are analyzed. A security evaluation index system for surrounding rock under adverse combinations of joint surfaces is proposed. A secondary fuzzy comprehensive evaluation model is introduced, which determines the weights and membership of the safety eva-luation index system using a multiplication scale method and single value membership function respectively. Based on the evaluation model, the qualitative and quantitative grading standards for the secondary index of the safety evaluation index system for surrounding rock under adverse combinations of joint surfaces are presented. The safety evaluation model was verified using the Dingjiawan tunnel project, with the predicted results generally agreeing with the actual situation.
.Fuzzy Safety Evaluation of a Tunnel Collapse Under an Adverse Combination of Surrounding Rock Joint Surfaces[J] MODERN TUNNELLING TECHNOLOGY, 2013,V50(2): 72-78
2013, Vol. 50 