Research Article
Engineering Classification of Jointed Rock Mass Based on Connectional Expectation: A Case Study for Songta Dam Site, China
Table 6
The pairwise comparison matrix for the evaluation index of rock mass quality.
| | Evaluation index | Rock strength | Joint spacing | RQD | Roughness | Aperture | Weathering | Groundwater | Dip difference |
| | Rock strength | 1 | 1 | 2 | 3 | 3 | 3 | 2 | 1 | | Joint spacing | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | | RQD | 1/2 | 1 | 1 | 2 | 3 | 3 | 2 | 1 | | Roughness | 1/3 | 1/2 | 1/2 | 1 | 1 | 1 | 1/2 | 1/2 | | Aperture | 1/3 | 1/2 | 1/3 | 1 | 1 | 1 | 1 | 1/3 | | Weathering | 1/3 | 1/2 | 1/3 | 1 | 1 | 1 | 1 | 1/2 | | Groundwater | 1/2 | 1/2 | 1/2 | 2 | 1 | 1 | 1 | 1/2 | | Dip difference | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 1 |
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