Evaluation of Mine Geo-environment Quality in Shangnan Country Based on Information Weight Method and Set Pair Analysis

4th Annual International Workshop on Materials Science and Engineering

Wang, Nianqin^1 ; Li, Renwei^1

College of Geology and Environment, Xi'An University of Science and Technology, Xi'an

710054, China^1

关键词: Comprehensive managements;    Connection degree;    Ecological environments;    Evaluation index;    Evaluation index system;    Mining development;    Set pair analysis;    Weight methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/381/1/012010/pdf
DOI  :  10.1088/1757-899X/381/1/012010

来源: IOP

【 摘 要 】

Mining development is the pillar industry of the Shangnancounty andfrequent mine activities is the primary reason that leads to geo-environment problems. As the number of mine is large and poor concentration, taking Shangnan country as the research area. Evaluation index system is built that contains the influence of mining development on geo-environment, basic geology and ecological environment, a total of 15 indexes. Dividing the study area into 169 square units which length is 4km and using information weight method to calculate the weight of evaluation index. Then, the connection degree of each unit will be obtained by set pair analysis. Finally, according to connection degree intervals, mine geo-environment quality levelscan be devided into "serious", "general" and "good". The result shows: spatial distribution of mine geo-environment quality in Shangnan county is quite different; the quality of mine geo-environment in the central and northern of Shangnan county are obviously superior to that in the south; the "serious", "general" and "good" each occupies 8.28%, 53.85% and 37.87% of research area. The result can provide theoretical basis for mine geo-environment comprehensive management of Shangnan County.