Mined Areas
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Mine fleet cost evaluation - Dijkstra's optimized path
Abstract The transport distance in a mining operation strongly influences a mine operation revenue and its operational cycle because it is a fundamental part of the total mining costs. Generally, the transport route is determined based on an engineer's practical knowledge, which does not consider any mechanism to optimize the possible routes to be taken. In
REM, Int. Eng. J.. Publicado em: 2019-06
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2. Mine closure in Ouro Preto: the remnants of the 18th century gold rush and the tourism as an economic opportunity
Abstract Mine closure is the set of all activities that follow the end of the productive phase of a mine, characterizing itself as the process of returning an area transformed by mining into a new condition of sustainability, considering the potential future and the best possible reclamation of the area impacted. However, such an understanding was not concei
REM, Int. Eng. J.. Publicado em: 2019-03
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3. Soil Macrofauna as Indicator of Environmental Recovery in a Mining Area
ABSTRACT This work aimed to characterize the composition of the soil macrofauna in non-mined and mined areas recovered with native vegetation, Eucalyptus dunnii Maiden and Acacia mearnsii De Wild. plantations, in a coal mine. Five areas were evaluated, namely, three non-mined areas and two mined and recovered areas. Six soil samples per area were collected
Floresta Ambient.. Publicado em: 13/09/2018
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4. The use of RPAS - Remotely Piloted Aircraft Systems in the topographic mapping for mining
Abstract In the light of the technological transformations that have been occurring in the field of Remote Sensing, the objective of this study was to evaluate the feasibility and the quality of the results that could be achieved in the topographic modeling of the terrain with a Remotely Piloted Aircraft Systems (RPAS) survey in open-pit mines. The mining ac
REM, Int. Eng. J.. Publicado em: 2018-04
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5. Substratum quality indicators for revegetated areas monitoring: study directed to the sand mining. / Indicadores da qualidade do substrato para monitoramento de áreas revegetadas: estudo dirigido à mineração de areia.
Mining is an agent of significant changes in soil properties. Successful land rehabilitation depends on restoring those characteristics in natural soils or establishing a suitable substratum for plant growth using available materials such as waste rock or mineral tailings. A process for monitoring the quality of the substratum in mine-affected areas was deve
Publicado em: 2010
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6. Avaliação da sucessão ecológica e do desenvolvimento de árvores em uma lavra de cascalho revegetada do Distrito Federal, DF - Brasil
Brazilian savanna holds the greatest floristic biodiversity of this type in the World. 41,6% of brazilian savanna vegetation was substituted by anthropic activities. One of them is mining. The recuperation process of the degraded area is slow and complex and involves revegetation activities and soil management practice. The present study was established in a
Publicado em: 2009
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7. Avaliação da qualidade dos substratos minerados em cinco cascalheiras revegetadas no Distrito Federal
The activities that cause high impacts to the soils in the Cerrados are causing a significant increase in loss of productivity with respect to areas of agriculture and loss of resilience in degraded environments by mining. In the Federal District (Distrito Federal), the mining is responsible for degradation of a length exceeding 0.6% of the size of territory
Publicado em: 2009
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8. Estudo da adição do resíduo proveniente da extração de minério de ferro em argilas do Rio Grande do Norte
The mining industry is responsible for the generation of waste from their natural process of extraction. The mining impacts in urban areas are of special importance due to the high urban occupation, which are exacerbated due to the proximity of the mined areas and populated areas. Some solutions to wastedisposal have the potential to significantly reduce the
Publicado em: 2009
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9. VISTREE: uma linguagem visual para análise de padrões arborescentes e para especificação de restrições em um ambiente de mineração de árvores
The frequent pattern mining in data represented by more complex structures like trees and graphs are growing lately. Among the reasons for this improvement is the fact that the tree and graph patterns has more information than sequential patterns, besides there is the possibility of usage of this type of mining in several areas like XML Mining,Web Mining and
Publicado em: 2008
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10. A aplicação de mecanismos economicos para assegurar a reabilitação dos impactos socioambientais causadas pela mineração de saibro no municipio de Ubatuba/SP / The application of economic mechanics to ensure the rehabilitation of socioenvironmental impacts impacts caused by residual soil ("SAIBRO")
The small scale mining industry is substantially pertinent for the social and economic development of the country. Nonetheless, this activity has been frequently associated with adverse social and environmental impacts. There is a growing concern from the society, which is expressed in the regulatory sectors, that aims to properly rehabilitate mined areas. T
Publicado em: 2008
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11. A aqÃicultura como alternativa de reabilitaÃÃo ambiental para Ãreas mineradas na RegiÃo Metropolitana do Recife â RMR e Goiana/PE
Currently, the Mineral Industry seeks to support the sector in models of social and environmental sustainability, because of conservation policies and increasing social demands. To this end, with complex environmental management systems that enable the creation of appropriate conditions (recovery) for future use (rehabilitation) of the exploited area (degrad
Publicado em: 2008
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12. CLASSIFICAÇÃO DE PILHAS DE ESTÉRIL NA MINERAÇÃO DE FERRO
A atividade de extração mineral traz consigo a produção de uma quantidade variável de materiais de pouco ou nenhum valor econômico, respectivamente minério pobre ou estéril. Enquanto o manejo do minério pobre responde a uma estratégia de negócio e tem um caráter de provisoriedade, a remoção do estéril da área de lavra e sua disposição final
Publicado em: 2008