Attribute recognition model and its application of fatalness assessment of gas burst in tunnel

Abstract：In order to improve the present methods of quantitatively assessment of gas burst during tunnel construction,attribute recognition model based on attribute mathematical theory was developed for assessment of gas burst in tunnel at the prospecting stage.Firstly,based on the analysis of main causes of gas burst in tunnel,seven parameters were chosen as the criterion indices for identification and classification of fatalness assessment of gas burst in tunnel;secondly,attribute measurement functions were rigorously constructed to compute attribute measurement of single index and synthetic attribute measurement;lastly,the identification and classification of fatalness assessment of gas tunnel samples were recognized by the confidence criterion,then attribute recognition model was proposed for comprehensive assessment of gas burst fatalness assessment of gas tunnel.An exemplification study shows that the synthetic assessment results obtained through attribute measurement analysis agree well with the results obtained by the extension assessment method and D,K method.As attribute mathematical theory can successfully resolve certain issues with a number of fuzzy attributes in comprehensive evaluation,and its confidence criterion is established on the basis of the ordered evaluation sets,consequently,it will enable the evaluation results be more reliable.