Table 2 Monitoring information risk indicators.

From: Research on multi-source information responses and instability warning in the deformation and failure process of coal and rock

Index range

0 ≤ W(t) ≤ 0.25

0.25 < W(t) ≤ 0.50

0.50 < W(t) ≤ 0.75

0.75 < W(t) ≤ 1

Degree of risk

Safety

Safer

More dangerous

Dangerous

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