Table 4 Quantitative classification of rock mass integrity.

From: A probability prediction method for the classification of surrounding rock quality of tunnels with incomplete data using Bayesian networks

Rank

Complete

Slightly complete

Slightly broken

Broken

Extremely broken

Jv

[0, 3)

[3, 10)

[10, 20)

[20, 35)

[35, + ∞)

Kv

(0.75, 1]

(0.55, 0.75]

(0.35, 0.55]

(0.15, 0.35]

(0, 0.15]

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