Tools and criteria for the management of temporarily inoperative iron ore mines

Rem: Revista Escola de Minas

Simone Picarelli²  Gersonito Vieira¹  Alessandro Gomes Resende¹  Jeanne Michele Castro¹  Filipe Silveira¹  Germano Araújo¹  Elder Beirigo¹  Ana Carla Cota¹  Hernani Mota De Lima¹ 

[1] ,Vale S.ABelo Horizonte Minas Gerais ,Brasil

关键词: Mine closure;    risk analyses;    inoperative mines;    Fechamento de mina;    avaliação de riscos;    suspensão temporária de lavra;   

DOI  :  10.1590/S0370-44672014000100014

来源: SciELO

【 摘 要 】

This paper presents a tool for managing inoperative mines under the responsibility of the Mine Closure and Projects Management/Ferrous Planning and Development Department - Vale S.A., Brazil. Inoperative mines are defined as mines where mining operations are temporarily suspended and there is no definitive strategy regarding their closure. The main management challenges are to: (i) act in a variety of environments and conditions based on action priorities; (ii) identify the main company's image risks; (iii) plan for maintenance and monitoring; (iv) take care of environmental conditions of the sites and follow up audit recommendations; (v) coordinate the field operations and site rehabilitation; (vi) re-evaluate the rehabilitation performance of the site over time, (vii) support the mine closure team. The tool is based on the consolidation of field information through qualitative and quantitative analyses of the environmental risks and quality of each mine. These analyses support the decision-making process and the prioritisation of action to be taken. The tool provides a performance evaluation of the sites, allowing evaluation over time of the maintenance and rehabilitation actions carried out. The input for the tool consists of primary and secondary data (geotechnical and environmental) collected during fieldwork, which is then processed in spreadsheets. These assign prioritisation values based on two main themes: environmental risk and quality. Each of these themes has specific groups of subjects. The prioritization spreadsheet generates thematic maps that present the classification of the mine areas and the action priorities. The tool output is an action plan that guides management, considering all the structures of each site under its responsibility.

【 授权许可】

CC BY   
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