Research Article

A Novel Model of the Ideal Point Method Coupled with Objective and Subjective Weighting Method for Evaluation of Surrounding Rock Stability

Table 6

The closeness degree of surrounding rock at selected tunnel section to I–V standard ideal point and the judgment of surrounding rock classification.

SampleThe closeness degree for ideal pointResults of proposed modelActual grade of surrounding rock

10.30410.37290.17510.49580.4740IVIV
20.23340.38160.19260.44710.4660VV
30.22410.35310.54120.59510.5172IVIV
40.19470.37840.55420.59190.5199IVIV

, and are, respectively, the closeness degrees of the th sample to I–V standard ideal point.