Abstract：Sometimes，the evaluation results given by different tunnel classification methods of surrounding rock quality are inconsistent，then combination evaluation idea was introduced. Firstly，a calculation model of surrounding rock quality classification based on combination evaluation was formulated，in which three existing tunnel classification methods of surrounding rock quality are selected as the fundament methods. Secondly，according to the physical meaning and dimension of evaluation indices of different fundament methods were different，a standardized method for evaluation indices was developed to make evaluation results of different fundament methods can compare with each other. Thirdly，a reasonable degrees measure method for fundament methods was established by introducing drifting degree，based on which the weight calculation method for fundament method was developed. Then the combination evaluation method of surrounding rock quality classification of tunnel was developed. Finally，the method was used to analyze the practical engineering，and the results showed that the method proposed here was feasible and reasonable.
曹文贵，翟友成，王江营. 关口垭隧道围岩质量分级组合评价研究[J]. 岩石力学与工程学报, 2012, 31(S1): 3328-3332.
CAO Wengui，ZHAI Youcheng，WANG Jiangying. STUDY OF COMBINATION EVALUATION OF SURROUNDING ROCK QUALITY CLASSIFICATION OF GUANKOUYA TUNNEL. , 2012, 31(S1): 3328-3332.
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2012, Vol. 31 
