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

Table 11

The priorities of risk factors to the coal mine.

Factors	Local weight	Global weight	Ranking
Soil quality C1		0.6655	I
Concentration of coal C1-1	0.4521	0.3009	1
Concentration of lead C1-2	0.1481	0.0986	4
Concentration of cadmium C1-3	0.1827	0.1215	3
Concentration of zinc C1-4	0.1085	0.0722	6
Concentration of arsenic C1-5	0.1086	0.0723	5
Water environmental quality C2		0.2293	II
Concentration of Pb C2-1	0.7002	0.1606	2
Concentration of Zn C2-2	0.1339	0.0308	8
Concentration of COD C2-3	0.1060	0.0242	9
Concentration of BOB C2-4	0.0599	0.0137	11
Atmospheric environment C3		0.0679	III
Concentration of TSP C3-1	0.7754	0.0526	7
Concentration of CO C3-2	0.1871	0.0127	12
Concentration of SO2 C3-3	0.0322	0.0022	15
Concentration of radon C3-4	0.0053	0.0004	16
Ecological compensation indicators C6		0.0373	IV
Input intensity of pollution control C6-1	0.3790	0.0141	10
Perfection of ecological early warning mechanism C6-2	0.3313	0.0124	13
Proportion of environmental protection input to mine income C6-3	0.2896	0.0108	14