級(jí) 別
質(zhì)量指標(biāo)(M)
內(nèi)摩擦角φ(°)
粘聚力C(MPa)
變形模量E(GPa)
縱波速度(km/s)
泊松比
υ
Ⅰ(優(yōu))
＞3
＞70
＞4
＞20
＞5.5
0.2
Ⅱ(良)
1～3
45～70
1.5～4
10～20
4.5～5.5
0.25
Ⅲ(中等)
0.1～1
30～45
0.5～1.5
2～10
3.5～4.5
0.3
Ⅳ(差)
0.01～0.1
20～30
0.1～0.5
0.3～2
2.5～3.5
0.35
Ⅴ(壞)
＜0.01
＜20
＜0.1
＜0.3
＜2.5
＜0.4
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