Given the limitations and irrationality of traditional rock mass classification in complex geological environ-ments,which often brings uncertain factors to the cost control and safety production of tunnel construction.In order to optimize the classification evaluation system of tunnel surrounding rock,a surrounding rock classification evaluation in-dex system and evaluation index classification standards were constructed based on the theory of fuzzy mathematics,en-gineering construction factors such as cross-sectional area,and excavation method were introduced,and combined with geological factors such as rock strength,integrity coefficient,groundwater status,structural plane characteristics and geostress.The Analytic Hierarchy Process and Entropy Weight Method were applied to determine the comprehensive optimal weight values of each evaluation index,and a fuzzy comprehensive evaluation model for tunnel surrounding rock classification was established.Select relevant sections of the constructed tunnel for fuzzy comprehensive evaluation of surrounding rock,through comparative analysis,the following conclusions are drawn:The fuzzy mathematical theory was used to evaluate and classify the surrounding rock of the tunnel,achieving the quantitative disposal of multiple qualitative parameters and improving the reliability of surrounding rock evaluation.The classification results obtained by introducing relevant engineering construction factors as surrounding rock evaluation indicators are consistent with the actual revealed surrounding rock.
关键词
层次分析法(AHP)/熵权法/隧道工程/模糊综合评价法/围岩分级
Key words
analytical hierarchy process(AHP)/entropy weighting method/tunneling engineering/fuzzy comprehensive evaluation method/classification of surrounding rock
维普
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