Research Article
Estimating the Geological Strength Index (GSI) in Regional Seismic-Landslide Zonation Using the Empirical Regression Model
Table 3
The values of the constant
mi for intact rock, by rock group. Note that values in parentheses are estimates of Hoek et al. [
38].
| | Rock name | mi | Rock name | mi | Rock name | mi | Rock name | mi |
| | Conglomerate | (22) | Micritic limestone | 8 | Gneiss | 33 | Diorite | (28) | | Sandstone | 19 | Gypstone | 16 | Schists | 4–8 | Andesite | 19 | | Siltstone | | Anhydrite | 13 | Phyllites | (10) | Gabbro | 27 | | Claystone | 4 | Marble | 9 | Slate | 9 | Dolerite | (19) | | Greywacke | (18) | Hornfels | (19) | Granite | 33 | Basalt | (17) | | Chalk | 7 | Quartzite | 24 | Rhyolite | (16) | Norite | 22 | | Coal | (8–21) | Migmatite | 30 | Obsidian | (19) | Agglomerate | (20) | | Breccia | 20 | Amphibolite | 25–31 | Granodiorite | 30 | Breccia | (18) | | Sparitic limestone | 10 | Mylonites | 6 | Dacite | 17 | Tuff | (15) |
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