Research on Surrounding Rock Evaluation of Tunnel Based on Vague Set

Based on Vague set,an integrative evaluation method for the stability classification of surrounding rock was presented. The principle and representation method about Vague set, score function of evaluation method were introduced, and then the evaluation index system for the stability classification of surrounding rock is put forward, the simple dependent degree is introduced to determine the weight of factor. The feasibility and rationality of the proposed method was shown by the practical engineering calculation and comparative analysis with other methods, the results show this method has excellent performance and high prediction accuracy, and the proposed approach provided a new way for evaluation of stability classification of surrounding rock.