11 documents found, page 1 of 2
O uso da imagem digital por imigrantes brasileiros nas redes sociais: o registr...
Souza, Luis Eduardo deEste estudo propõe analisar as características da imagem digital em nosso tempo, confrontando teorias sobre novas tecnologias e cultura digital com as práticas diárias de usuários comuns. Para tanto, o estudo envolveu o acompanhamento de conteúdos visuais partilhados por um grupo de imigrantes brasileiros nas redes sociais Instagram e WhatsApp, onde os registros combinam qualidades de documento e funções intera...
Methodology for quantitative analysis of muck pile volume using specific mining...
Valcarenghi, Dartanhan de Oliveira; Souza, Luis Eduardo de; Abichequer, Luciana Arnt; Neto, Raul Oliveira; Gonçalves, Ítalo GomesThis work presents a quantitative analysis methodology of blasted rock volume. Field topographic information was collected regarding the blasting of mining benches in a limestone mine, and these data plus the blast holes layout were used to generate a digital model of the benches with the Micromine software. Besides allowing the visualization of the 3D wireframe models with the spatial arrangement of the blast ...
Analysis and interpretation of massive quality parameters for geomechanical mod...
Abichequer, Luciana Arnt; Souza, Luis Eduardo de; Oliveira Neto, Raul; Fabrício, Juliana FernandesBefore lauching any mining enterprise, whether open pit or underground, must have knowledge of rock mass geomechanical characteristics, which the work will be developed. The geomechanical classification systems are used to obtain information about these characteristics. These systems gather the necessary information and propose an index for rock mass qualifying. This article presents the methodology used on a r...
Environmental recovery in sterile waste pile in limestone mining
Santos, Evandro Gomes dos; Oliveira Neto, Raul; Abichequer, Luciana Arnt; Souza, Luis Eduardo de; Marques, Renato; Gonçalves, Ítalo GomesOverburden material and waste are the main residues generated by mining, with attention regard to its proper handling and disposal. Although the limestone extraction that comprise basic unit operations over the years moving large volumes of sterile, which is deposited in piles. In this context the present study aims to evaluate and propose improvements to the constructive aspects of the piles under study, ident...
Environmental assessment methodology in the analysis of location alternatives f...
Forgearini, Ray Garcia; Oliveira Neto, Raul; Souza, Luis Eduardo de; Abichequer, Luciana Arnt; Gonçalves, Ítalo GomesThis work use an environmental planning methodology , as an aid to the analysis of location alternatives for disposal of overburden to be generated during the development and operation phases of the future of pit mine phosphate Três Estradas. Applying technical guidance, present in the NBR 13029 of ABNT , with minimum character of the impacts on the environment by applying weights to environmental parameters fo...
Noise and vibration impact assessment in city limits situation
Souza, Luis Eduardo de; Dorneles, Felipe Tavares; Zago, Luís Eduardo Oliveira; Abichequer, Luciana Arnt; Oliveira Neto, Raul; Gonçalves, Ítalo GomesWith economic and population growth in recent decades, it has been possible to observe an increase of vehicles in urban areas, and associated with it an increase in health problems caused by the daily impact of equipment and vehicles in cities. Generally, the main impacts realized by the population are the vibration and noise, often caused by the intense traffic of vehicles, as well as the operation of mechanic...
Survey of discontinuities and evaluation of the slope stability at Mangueirão mine
Paz, Valmor Madeira; Gonçalves, Ítalo Gomes; Oliveira Neto, Raul; Souza, Luis Eduardo de; Abichequer, Luciana ArntThe study and control of slope stability have grown greatly in recent decades, so the quality and the reliability of the results of an analysis of stability are very important because they provide savings for the enterprise and security for workers. This article aims to address the geological and geotechnical aspects considered most important for the stability of slope excavation in rock masses. To achieve this...
Diagnosis and prediction models of noise and vibration levels in rock blasting
Fontanelli, Gabriel; Souza, Luis Eduardo de; Abichequer, Luciana Arnt; Oliveira Neto, Raul; Gonçalves, Ítalo GomesThe use of explosives is an efficient and economically viable way for blasting rock in mining. However, it is know that 20-30% of the energy of explosives is actually used in rock fragmentation and the rest of this energy ends up causing impacts on the environment such as noise, vibration, gases, dust and flyrocks. Thus, there is a real risk to structures and people around of quarries and mines in general when ...
Control and prediction of noise and ground vibrations generated by rock blasting
Dorneles, Felipe Tavares; Souza, Luis Eduardo de; Oliveira Neto, RaulAir blast and ground vibrations generated by rock blasting have become a major legal and technical problem, mainly due the growing of the cities to the neighborhood of mines and quarries. For many people, the main environmental impacts associated with mining are those generated by rock blasting, and there is a real risk in handling explosives since just around 20-30% of the explosives energy is used to fragment...
Estimativa de incertezas e sua aplicação na classificação de recursos minerais
Souza, Luis Eduardo deA estimativa de recursos minerais é essencial para o propósito de planejamento econômico em qualquer empreendimento mineiro. Além de finalizar os trabalhos de pesquisa mineral, a avaliação de recursos/reservas é a base sobre a qual serão estabelecidos os estudos de viabilidade econômica que se seguem. Atividades como planejamento e otimização de cavas, orientação dos avanços da lavra, projeção de fluxos de caix...