Research Article
Stability Assessment of High and Steep Cutting Rock Slopes with the SSPC Method
Table 2
Characteristics of the main discontinuity sets in the surveyed slopes.
| Slope | Joint | Statistical dominant discontinuity | Geological dominant discontinuity | Note | Dip direction (°) | Dip (°) | Spacing (m) | Dip direction (°) | Dip (°) | Spacing (m) | Prospecting tunnel |
| 1 | B1 | 217 | 70 | 0.2–0.5 | 190 | 70 | 0.2–0.5 | PD09 | J1 | 113 | 32 | 0.1–0.3 | 75 | 45 | 0.1–0.3 | J2 | 138 | 83 | 0.1–0.3 | 305 | 55 | 0.1–0.3 |
| 2 | B1 | 217 | 70 | 0.2–0.5 | 215 | 75 | 0.3–0.6 | J1 | 113 | 32 | 0.1–0.3 | 130 | 15 | 0.2–0.4 | J2 | 138 | 83 | 0.1–0.3 | 130 | 80 | 0.2–0.4 |
| 3 | B1 | 194 | 66 | 0.1–0.5 | 190 | 60 | 0.1–0.5 | PD01 | J1 | 122 | 54 | 0.2–0.6 | 120 | 55 | 0.2–0.6 | J2 | 318 | 69 | 0.2–0.6 | 335 | 60 | 0.2–0.6 |
| 4 | B1 | 194 | 66 | 0.1–0.5 | 185 | 65 | 0.2–0.6 | J1 | 122 | 54 | 0.2–0.6 | 125 | 60 | 0.3–0.7 | J2 | 318 | 69 | 0.2–0.6 | 330 | 65 | 0.3–0.7 |
| 5 | B1 | 205 | 68 | 0.1–0.4 | 205 | 70 | 0.1–0.4 | PD07 | J1 | 78 | 38 | 0.1–0.4 | 70 | 25 | 0.1–0.3 | J2 | 327 | 64 | 0.2–0.4 | 315 | 60 | 0.3–0.4 |
| 6 | B1 | 195 | 75 | 0.2–0.5 | 200 | 50 | 0.1–0.4 | PD20 | J1 | 325 | 45 | 0.1–0.3 | 140 | 85 | 0.2–0.4 | J2 | 300 | 85 | 0.2–0.6 | 35 | 45 | 0.3–0.7 |
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