岩层 | 摩擦f/(˚) | 粘结C/MPa | 抗拉强度/MPa |
砂质泥岩 | 38 | 7.6 | 2.5 |
细砂岩 | 36 | 8.0 | 3.1 |
砂质泥岩 | 38 | 7.6 | 2.5 |
7#煤层 | 35 | 1.2 | 1.4 |
泥岩 | 37 | 2.8 | 2.2 |