Environmental Risk Assessment System for Phosphogypsum Tailing Dams

Table 11

The evaluation results.

	The fuzzy evaluating vectors	Rating
Volatility (C1)	(3.4,4.4,5.4,6.4)	(M, G)
Solubility (C2)	(3.55,4.55,5.55,6.55)	(M, G)
Radioactivity (C3)	(4.4,5.4,6.4,7.4)	(M, G)
Corrosivity (C4)	(1.75,2.75,3.75,4.75)	(P, M)
Acidity and alkaline (C5)	(1.7,2.7,3.7,4.7)	(P, M)
Acute toxicity (C6)	(3.35,4.35,5.35,6.35)	(M, G)
Extraction toxicity (C7)	(4.2,5.2,6.2,7.2)	(M, G)
Air (C8)	(3.5,4.5,5.5,6.5)	(M, G)
Soil (C9)	(2.15,3.15,4.15,3.95)	(P, M)
Geology (C10)	(1.25,2.25,3.25,4.25)	(P, M)
Hydrology (C11)	(3.15,4.15,5.15,6.15)	(M, G)
Ecology (C12)	(4.05,5.05,6.05,7.05)	(M, G)
Population density (C13)	(3.95,4.95,5.95,6.95)	(M, G)
Industry (C14)	(2.45,3.25,4.05,4.85)	(P, M)
Agriculture (C15)	(4,5,6,7)	(M, G)
Tourism (C16)	(4.6,5.6,6.6,7.6)	(M, G)
Animal husbandry (C17)	(3.9,4.9,5.9,6.9)	(M, G)
Distance of community (C18)	(4.15,5.15,6.15,7.15)	(M, G)
Seepage line and dry beach length (C19)	(2.75,3.75,4.75,5.75)	(P, M)
Height and capacity (C20)	(2.85,3.85,4.85,5.85)	(P, M)
Damming mode (C21)	(2.05,3.05,4.05,5.05)	(P, M)
Type of tailings (C22)	(3.05,4.05,5.05,6.05)	(M, G)
Service period (C23)	(4.05,5.05,6.05,7.05)	(M, G)
Material of dam (C24)	(2.4,3.4,4.4,5.4)	(P, M)
Returning reservoir (C25)	(4.4,5.4,6.4,7.4)	(M, G)
Seepage shaft (C26)	(4.2,5.2,6.2,7.2)	(M, G)
Drainage (C27)	(3.65,4.65,5.65,6.65)	(M, G)
Flood discharge trench (C28)	(3.45,4.45,5.45,6.45)	(M, G)
Flood draining facility (C29)	(3.3,4.3,5.3,6.3)	(M, G)
Revetment construction maintenance (C30)	(4.15,5.15,6.15,7.15)	(M, G)
Dam safety monitoring (C31)	(4.2,5.2,6.2,7.2)	(M, G)
Daily management (C32)	(4.3,5.3,6.3,7.3)	(M, G)
ISO authentication (C33)	(4.3,5.3,6.3,7.3)	(M, G)
Emergency capacity of rescuing facilities (C34)	(4.15,5.15,6.15,5.35)	(M, G)
Capacity of emergency protection and eliminating leak (C35)	(3.75,4.75,5.75,6.75)	(M, G)
Support of government (B10)	(3.35,4.35,5.35,6.35)	(M, G)
Using proportion (B11)	(2.8,3.8,4.8,5.8)	(P, M)
Technology maturity (B12)	(3.15,4.15,5.15,6.15)	(M, G)
Physical characteristic (B1)	(4.067,5.067,6.067,7.067)	(M, G)
Chemical characteristic (B2)	(3.376,4.376,5.376,6.376)	(M, G)
Natural environment (B3)	(2.248,3.248,4.248,4.972)	(P, M)
Social environment (B4)	(4.023,5.015,6.006,6.997)	(M, G)
Characteristics of dam body (B5)	(2.670,3.670,4.670,5.670)	(P, M)
Drainage installation (B6)	(4.157,5.157,6.157,7.157)	(M, G)
Flood drainage facility (B7)	(3.375,4.375,5.375,6.375)	(M, G)
Risk prevention (B8)	(4.272,5.272,6.272,7.272)	(M, G)
Emergency response (B9)	(3.852,4.852,5.852,6.392)	(M, G)
Characteristics of solid waste (A1)	(3.553,4.553,5.553,6.553)	(M, G)
Characteristics of environment (A2)	(3.136,4.131,5.127,5.985)	(M, G)
Tailing dam risk (A3)	(3.111,4.111,5.111,6.111)	(M, G)
Risk management (A4)	(4.125,5.125,6.125,6.964)	(M, G)
Utilization prospect (A5)	(3.100,4.100,5.100,6.100)	(M, G)
Final objective	(3.371,4.370,5.370,6.321)	(M, G)