Real-Time Warning and Risk Assessment of Tailings Dam Disaster Status Based on Dynamic Hierarchy-Grey Relation Analysis

Table 3

Elements of critical warning points for each indicator level.

U	u1-1	u1-2	u1-3	u1-4	u1-5	u1-6	u2-1	u2-2	u2-3	u2-4	u2-5	u2-6
Review data	95	95	90	85	90	85	95	95	90	85	90	80
V level (90–100]	95	95	95	95	95	95	95	95	95	95	95	95
IV level (80–90]	85	85	85	85	85	85	85	85	85	85	85	85
III level (70–80]	75	75	75	75	75	75	75	75	75	75	75	75
II level (60–70]	65	65	65	65	65	65	65	65	65	65	65	65
I level [0–60]	55	55	55	55	55	55	55	55	55	55	55	55