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

Table 6

Results of tailings dam evaluation index system weight.

Goals layer	Guidelines Layer; (weight)	Indicators layer	Current state weight		Future state weight
			Tailings dam disaster risk identification U	Inherent risk indicators; U1  (0.500)	Maximum daily precipitation u1-1	0.3825	0.1912	0.3825	0.1912
Seismic capacity of the dam u1-2	0.2504	0.1252			0.1006	0.0503
Severity of tailings dam seepage u1-3	0.1596	0.0798			0.2504	0.1252
Dam height u1-4	0.1006	0.0503			0.0641	0.032
Nearby residential buildings u1-5	0.0641	0.032			0.1596	0.0798
Total capacity of the reservoir u1-6	0.0428	0.0214			0.0428	0.0214
Frequency indicators U2  (0.500)	Depth of the immersion line u2-1	0.3813		0.1907	0.3825	0.1912
	Displacement of the crack u2-2	0.1584		0.0792	0.2504	0.1252
	Length of the dry beach u2-3	0.0636		0.0318	0.0428	0.0214
	Dispersion between the top of the beach and the reservoir water level u2-4	0.0412		0.0206	0.1596	0.0798
	Surface horizontal displacement of the dam body u2-5	0.2557		0.1279	0.1006	0.0503
	Settlement of the surface of the dam body u2-6	0.0998		0.0499	0.0641	0.032
Calculation result; (Current state)		Inherent risk consistency ratio: 0.0194; : 6.1225; Frequency risk consistency ratio: 0.0184; : 6.1160
Calculation result; (Future state)		Inherent risk consistency ratio: 0.0194; : 6.1225; Frequency risk consistency ratio: 0.0194; : 6.1225

Notes: is the weight of the original indicator layer to the criteria layer; is the weight of the original indicator layer to the target layer; is the weight of the new indicator layer on the criteria layer; isthe weight of the new indicator layer on the target layer.