Environmental Evaluation of Coal Mines Based on Generalized Linear Model and Nonlinear Fuzzy Analytic Hierarchy

Table 13

The priorities of risk factors to the coal mine [27].

Factors	Local weight	Global weight	Ranking
Soil quality C1		0.478	I
Concentration of coal C1-1	0.5588	0.2671	1
Concentration of lead C1-2	0.0967	0.0462	6
Concentration of cadmium C1-3	0.2219	0.1061	3
Concentration of zinc C1-4	0.0663	0.0317	9
Concentration of arsenic C1-5	0.0563	0.0269	10
Water environment quality C2		0.363	II
Concentration of Pb C2-1	0.6903	0.2506	2
Concentration of Zn C2-2	0.1493	0.0542	5
Concentration of COD C2-3	0.1118	0.0406	7
Concentration of BOB C2-4	0.0485	0.0176	13
Atmospheric environment C3		0.0831	III
Concentration of TSP C3-1	0.7449	0.0619	4
Concentration of CO C3-2	0.2358	0.0196	12
Concentration of SO2 C3-3	0.0168	0.0014	15
Concentration of radon C3-4	0.0025	0.0002	16
Ecological compensation indicators C6		0.0759	IV
Input intensity of pollution control C6-1	0.4598	0.0349	8
Perfection of ecological early warning mechanism C6-2	0.3083	0.0234	11
Proportion of environmental protection input to mine income C6-3	0.2319	0.0176	14