Research Article
Rock Mass Classification for Columnar Jointed Basalt: A Case Study of Baihetan Hydropower Station
Table 3
The main factors in the classification of columnar jointed rock mass.
| Factor | Integrality index of rock mass | Volumetric joint number | Rock block size (%) | Transverse hidden joint development degree (m) | Intraformational faulted zones development degree (m) |
| Description | and are wave velocities of rock mass and intact rock. | Sum of the linear density of rock joint in different directions. | The percentage of surface area for the column with a diameter over 10 cm. | The mean distance between two adjacent transverse hidden joints. | The mean distance between two adjacent intraformational faulted zones. |
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