Environmental monitoring and governance model of ion-adsorption type rare earth mining

3rd International Conference on Energy Engineering and Environmental Protection

能源学;生态环境科学

Yu, Yang^1 ; Wang, Denghong^1 ; Gao, Juanqin^1^2 ; Liu, Lijun^1^2 ; Yu, Feng^1^2

MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing

100037, China^1

China University of Geosciences, Beijing

100083, China^2

关键词: Comprehensive evaluation;    Comprehensive evaluation model;    Environmental influences;    Environmental Monitoring;    Environmental quality;    Evaluation index system;    Fuzzy comprehensive judgment;    Geological environment;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/227/6/062035/pdf
DOI  :  10.1088/1755-1315/227/6/062035

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

An environmental impact assessment was performed to evaluate the environmental impact of ion-adsorption type rare earth (iRee) mining in Southern Jiangxi Province, China. Based on the research of essential factors for mining environment systems, an evaluation index system for surface water quality was established, and a special assessment model was built based on principal component analysis and fuzzy theory. On the basis of evaluating the water quality, a fuzzy comprehensive judgment model was established to conduct a comprehensive evaluation of the local mining area's geological environmental quality. Four factors such as physical geography (A), basic geology (B), mining development coverage (C), and environmental influences (D) were selected and combined with field data and measurement results. These factors were used to establish an index system using an expert system and objectivity to determine the weight of the factors. A comprehensive evaluation model for the geological environmental impact of different types of iRee mines (light and heavy rare earth mines) was established based on a support vector machine (SVM) model. The results indicate that the monitoring and governance model successfully assesses the environmental impact of typical iRee mining areas by classifying the environmental quality into four levels. The model has a strong applied value as it provides help for geo-environmental management, helps with the exploitation of iRee mineral resources, protects the geological environments and helps restoring and reconstructing mine environments.