岩体基本 质量级别 | BQ值 | 重力密度γ (kN/m3) | 抗剪断峰强度 | 变形模量E (GPa) | 泊松比 | |
内摩擦角φ (˚) | 黏聚力c (MPa) | |||||
Ⅰ | >550 | >26.5 | >60 | >2.1 | >33 | <0.20 |
Ⅱ | 451~550 | >26.5 | 60~50 | 2.1~1.5 | 33~16 | 0.20~0.25 |
Ⅲ | 351~450 | 26.5~24.5 | 50~39 | 1.5~0.7 | 16~6 | 0.25~0.30 |
Ⅳ | 251~350 | 24.5~22.5 | 39~27 | 0.7~0.2 | 6~1.3 | 0.30~0.35 |
Ⅴ | ≤250 | <22.5 | <27 | <0.2 | <1.3 | >0.35 |