To study the influence of phosphogysum filling on the ground water environment, a phosphogysum filling water quality combination weighting-matter-element evaluation model is established based on game theory and matter-element analysis theory. 9 influence factors are chosen as evaluation indexes which include mercury, total arsenic, sexivalent chromium, iron, manganese, copper, zinc, total phosphorous and fluoride. Game theory is included in the model where combination weighting is adopted to avoid the defect of traditional matter-element evaluation methods that use a single weight. A comprehensive evaluation on the seeping water quality from different sampling points is conducted based on "Quality Standard for Ground Water". The results are as follows. Firstly, the matter-element analysis method based on the game theory includes combined influences from different evaluation factors on the water quality, the evaluation result being more comprehensive, systematic and factual. Secondly, water quality in the unfilled region reaches water quality level 1, a lower water quality is found in the filled region, and the circulating water has the lowest water quality in this study, i.e., water quality level 5. Finally, a phosphogysum filling water environment protection scheme is proposed and scientific evidence is provided for the safety in mines and environmentally friendly mining.
LI Xibing
,
FAN Yun
,
LAN Ming
,
SHANG Xueyi
. Evaluation of phosphogypsum filling water quality using game theory and matter-element analysis theory[J]. Science & Technology Review, 2015
, 33(15)
: 22
-26
.
DOI: 10.3981/j.issn.1000-7857.2015.15.002
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