Diagnosis of the production cycle in the small shaft sinking

Detalhes bibliográficos
Autor(a) principal: Luz, José Aurélio Medeiros da
Data de Publicação: 2022
Outros Autores: Silva, José Margarida da, Neuppmann, Pedro Henrique
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/28233
Resumo: Shaft sinking is a classic activity in underground mines. In shafts with small cross-section or in mines with low mechanization indices it is common to use hand pneumatic drills and blasting by explosive gelatin in cartridges, employing natural draft or flexible ducts with axial fans for gases and fumes exhaustion, muck removal by hand shoveling into hoistable dumping buckets. System of this type has been studied here, consisting of a rectangular cross-section shaft (3.7 m x 2.0 m), with final depth of 94 m, excavated in order to obtain samples for a pilot-scale mineral processing testwork, before the open pit mine’s industrial startup. The shaft had a concrete collar and its walls were supported by wooden sets spaced 1.5 m and 25 mm thick wooden planks as liners. This shaft has been excavated in schist rocks belonging to the metamorphosed hydrothermal deposit of copper and gold located in Chapada (municipality of Mara Rosa, Brazil). Daily production worksheets covering one month campaign were statistically analyzed, encompassing the entire cycle of mining operations, namely drilling, charging and blasting, fumes exhaustion, mucking, wall and   face trimming and scaling, and assemblage of support system. Operation downtimes were also quantified. Statistical analysis of productivity indices allowed the detection of critical points of the operation and the establishment reference for similar mining operations.
id UNIFEI_c20c75fedd99257b795dc364a6ed8c62
oai_identifier_str oai:ojs.pkp.sfu.ca:article/28233
network_acronym_str UNIFEI
network_name_str Research, Society and Development
repository_id_str
spelling Diagnosis of the production cycle in the small shaft sinkingDiagnóstico del ciclo productivo en la profundización de pequeños pozosDiagnose do ciclo produtivo no aprofundamento de pequenos poçosTrabalho mineiroMina subterrâneaPequenas minasDistribuição estatística.Labores minerosMinas subterráneasPequeñas minasDistribución estadística.Mine workUnderground mineSmall minesStatistical distribution.Shaft sinking is a classic activity in underground mines. In shafts with small cross-section or in mines with low mechanization indices it is common to use hand pneumatic drills and blasting by explosive gelatin in cartridges, employing natural draft or flexible ducts with axial fans for gases and fumes exhaustion, muck removal by hand shoveling into hoistable dumping buckets. System of this type has been studied here, consisting of a rectangular cross-section shaft (3.7 m x 2.0 m), with final depth of 94 m, excavated in order to obtain samples for a pilot-scale mineral processing testwork, before the open pit mine’s industrial startup. The shaft had a concrete collar and its walls were supported by wooden sets spaced 1.5 m and 25 mm thick wooden planks as liners. This shaft has been excavated in schist rocks belonging to the metamorphosed hydrothermal deposit of copper and gold located in Chapada (municipality of Mara Rosa, Brazil). Daily production worksheets covering one month campaign were statistically analyzed, encompassing the entire cycle of mining operations, namely drilling, charging and blasting, fumes exhaustion, mucking, wall and   face trimming and scaling, and assemblage of support system. Operation downtimes were also quantified. Statistical analysis of productivity indices allowed the detection of critical points of the operation and the establishment reference for similar mining operations.El hundimiento de pozos es una actividad clásica en las minas subterráneas. En pozos de pequeña sección o en minas con bajos índices de mecanización es común el uso de perforadoras neumáticas manuales y voladuras por gelatina explosiva en cartuchos, empleando tiro natural o ductos flexibles con ventiladores axiales para extracción de gases y humos, remoción de material fragmentado con pala manual y baldes basculantes elevables. Aquí se ha estudiado un sistema de este tipo, consistente en un pozo de sección rectangular (3,7 m x 2,0 m), con profundidad final de 94 m, excavado con el fin de obtener muestras para ensayos de procesamiento de mineral a escala piloto, antes de la explotación a rajo abierto de la mina. El pozo tenía collar de hormigón y sus paredes estaban soportadas por juegos de madera espaciados 1,5 m y tablones de madera de 25 mm de espesor como revestimientos. Este pozo ha sido excavado en rocas esquistosas pertenecientes al yacimiento hidrotermal metamorfoseado de cobre y oro ubicado en Chapada (municipio de Mara Rosa, Brasil). Se analizaron estadísticamente las hojas de trabajo de producción diaria que cubrían una campaña de un mes, abarcando todo el ciclo de las operaciones mineras, a saber, perforación, carga y voladura, agotamiento de humos, remoción de escombros, recorte y escalado de paredes, y ensamblaje del sistema de soporte. También se cuantificaron los tiempos muertos de operación. El análisis estadístico de los índices de productividad permitió la detección de puntos críticos de la operación y el establecimiento de referencia para operaciones mineras similares.O aprofundamento de poços é uma atividade clássica em minas subterrâneas. Em poços de pequena seção transversal ou em minas com baixos índices de mecanização é comum o uso de perfuratrizes pneumáticas manuais e desmonte por gelatina explosiva em cartuchos, empregando tiragem natural ou dutos flexíveis com ventiladores axiais para exaustão de gases e fumos, remoção de material desmontado por paleamento manual e transporte em caçambas basculantes içáveis. Um sistema deste tipo foi estudado, constituído por um poço de secção retangular (3,7 m x 2,0 m), com profundidade final de 94 m, escavado para se obterem amostras para ensaios de beneficiamento mineral em escala piloto, antes posta em marcha industrial da cava a céu aberto. O poço era munido de colar de concreto e suas paredes eram sustentadas por quadros de madeira espaçados de 1,5 m e pranchões de madeira de 25 mm de espessura como revestimento. Este poço foi escavado em rochas xistosas pertencentes ao depósito hidrotermal metamorfoseado de cobre e ouro localizado na Chapada (município de Mara Rosa, Brasil). Foram analisadas estatisticamente as planilhas de produção diária de um mês de campanha, abrangendo todo o ciclo das operações, nomeadamente: perfuração, carregamento e desmonte, exaustão de fumos, remoção do material desmontado, aparelhamento de paredes e faces e montagem de sistema de escoramento. As paradas de operação também foram quantificadas. A análise estatística dos índices de produtividade permitiu a detecção de pontos críticos da operação e o estabelecimento de referência para operações mineiras similares.Research, Society and Development2022-04-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/2823310.33448/rsd-v11i5.28233Research, Society and Development; Vol. 11 No. 5; e44711528233Research, Society and Development; Vol. 11 Núm. 5; e44711528233Research, Society and Development; v. 11 n. 5; e447115282332525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIenghttps://rsdjournal.org/index.php/rsd/article/view/28233/24733Copyright (c) 2022 José Aurélio Medeiros da Luz; José Margarida da Silva; Pedro Henrique Neuppmannhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccess Luz, José Aurélio Medeiros daSilva, José Margarida daNeuppmann, Pedro Henrique 2022-04-17T18:18:56Zoai:ojs.pkp.sfu.ca:article/28233Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:45:42.687239Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Diagnosis of the production cycle in the small shaft sinking
Diagnóstico del ciclo productivo en la profundización de pequeños pozos
Diagnose do ciclo produtivo no aprofundamento de pequenos poços
title Diagnosis of the production cycle in the small shaft sinking
spellingShingle Diagnosis of the production cycle in the small shaft sinking
Luz, José Aurélio Medeiros da
Trabalho mineiro
Mina subterrânea
Pequenas minas
Distribuição estatística.
Labores mineros
Minas subterráneas
Pequeñas minas
Distribución estadística.
Mine work
Underground mine
Small mines
Statistical distribution.
title_short Diagnosis of the production cycle in the small shaft sinking
title_full Diagnosis of the production cycle in the small shaft sinking
title_fullStr Diagnosis of the production cycle in the small shaft sinking
title_full_unstemmed Diagnosis of the production cycle in the small shaft sinking
title_sort Diagnosis of the production cycle in the small shaft sinking
author Luz, José Aurélio Medeiros da
author_facet Luz, José Aurélio Medeiros da
Silva, José Margarida da
Neuppmann, Pedro Henrique
author_role author
author2 Silva, José Margarida da
Neuppmann, Pedro Henrique
author2_role author
author
dc.contributor.author.fl_str_mv Luz, José Aurélio Medeiros da
Silva, José Margarida da
Neuppmann, Pedro Henrique
dc.subject.por.fl_str_mv Trabalho mineiro
Mina subterrânea
Pequenas minas
Distribuição estatística.
Labores mineros
Minas subterráneas
Pequeñas minas
Distribución estadística.
Mine work
Underground mine
Small mines
Statistical distribution.
topic Trabalho mineiro
Mina subterrânea
Pequenas minas
Distribuição estatística.
Labores mineros
Minas subterráneas
Pequeñas minas
Distribución estadística.
Mine work
Underground mine
Small mines
Statistical distribution.
description Shaft sinking is a classic activity in underground mines. In shafts with small cross-section or in mines with low mechanization indices it is common to use hand pneumatic drills and blasting by explosive gelatin in cartridges, employing natural draft or flexible ducts with axial fans for gases and fumes exhaustion, muck removal by hand shoveling into hoistable dumping buckets. System of this type has been studied here, consisting of a rectangular cross-section shaft (3.7 m x 2.0 m), with final depth of 94 m, excavated in order to obtain samples for a pilot-scale mineral processing testwork, before the open pit mine’s industrial startup. The shaft had a concrete collar and its walls were supported by wooden sets spaced 1.5 m and 25 mm thick wooden planks as liners. This shaft has been excavated in schist rocks belonging to the metamorphosed hydrothermal deposit of copper and gold located in Chapada (municipality of Mara Rosa, Brazil). Daily production worksheets covering one month campaign were statistically analyzed, encompassing the entire cycle of mining operations, namely drilling, charging and blasting, fumes exhaustion, mucking, wall and   face trimming and scaling, and assemblage of support system. Operation downtimes were also quantified. Statistical analysis of productivity indices allowed the detection of critical points of the operation and the establishment reference for similar mining operations.
publishDate 2022
dc.date.none.fl_str_mv 2022-04-12
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/28233
10.33448/rsd-v11i5.28233
url https://rsdjournal.org/index.php/rsd/article/view/28233
identifier_str_mv 10.33448/rsd-v11i5.28233
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/28233/24733
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 11 No. 5; e44711528233
Research, Society and Development; Vol. 11 Núm. 5; e44711528233
Research, Society and Development; v. 11 n. 5; e44711528233
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
_version_ 1797052794135379968

Registros relacionados