Análise Operacional da Extração Florestal Mecanizada em Módulos Próprios e Terceirizados

Lacerda, Leonardo Cassani; Fiedler, Nilton César; Chichorro, José Franklim; Carmo, Flávio Cipriano de Assis do; Mendonça, Adriano Ribeiro de

doi:10.14583/2318-7670.v03n03a10

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…The harvester output indicator was above the one found by Silva (2011), Alves et al (2015) e Lacerda et al (2015). In a research done by Simões and Fenner (2010) Operational analysis of forest harvesting...…”

Section: Output Indicatormentioning

confidence: 67%

Operationalanalysis of Mechanical Cut-to-Length Forest Harvesting System

et al. 2017

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-The objective of this research was to conduct an operational analysis of forest harvesting activities in a mechanized of the system cut to length in eucalypt plantations in south of Bahia, to determine the distribution of operation times, productivity, operational efficiency and mechanical availability of two models of harvester and two models of forwarder, evaluating these machines in three modules harvesting methodology through time and motion studies. Auxiliary activities corresponded to the lowest percentages within the operating times (mean 1.9% to 1.8% for harvester and forwarder), already operating activities were those that had the highest percentages. The first shift was presented the worst results of operations for the harvester (average 66.3%) and the third shift for the forwarder (55.5%). For the harvester module 1 showed the best result of productive times (average 70.36%). In relation to the forwarder, this same module showed the worst results with unproductive times (average of 22.17%). The availability and mechanical parameters were superior productivity for the forwarder (mean 82.31% and 51.33 m 3 /h, respectively), as indicators of degree of utilization and operational efficiency were higher in harvester (average 85.01% and 66.41%, respectively). Thus, for the forwarder, the parameters mechanical availability and productivity were higher, while for the harvester, they were the indicators of degree of utilization and operational efficiency Keywords: Forest optimization, Analysis of income, Forest Planning. ANÁLISE OPERACIONAL DA COLHEITA FLORESTAL EM SISTEMA MECANIZADO DE TORAS CURTASRESUMO -Objetivou-se com esta pesquisa realizar uma análise operacional das atividades de colheita florestal em um sistema mecanizado de toras curtas em plantios de eucalipto no sul da Bahia. Foram determinadas a distribuição dos tempos operacionais, produtividade, eficiência operacional e disponibilidade mecânica de dois modelos de colhedor florestal (harvester) e dois modelos de trator florestal autocarregável (forwarder), em três módulos de colheita florestal através da metodologia de estudos de tempos e movimentos. As atividades auxiliares corresponderam aos menores percentuais dentro dos tempos operacionais

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Section: Output Indicatormentioning

confidence: 67%

Operationalanalysis of Mechanical Cut-to-Length Forest Harvesting System

et al. 2017

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“…According to Malinovski & Malinovski (1998), productivity of a particular operation is in function of external variables (site characteristics) and machine variables (mainly the operational and the characteristics of the base machine and the operation implements). Lacerda et al (2015) point out as influential factors in the forest extraction operations with the forwarder and the efficiency in maintenance processes (corrective or preventive) qualified professionals in the operation, efficient transportation of employees and machinery for production area.…”

Section: Forest Extraction Planning For the Rated Projectmentioning

confidence: 99%

Geotechnology as a Planning Tool in the Determination of Forest Extraction Costs

et al. 2019

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The objective of this work was to use the geotechnology study as a planning tool in determining the costs of forest extraction. The research was carried out in areas of the Forest Company that operates in the southern region of Bahia, Brazil. The work was developed in two stages, the first corresponding to the determination of production costs of the forwarder and the second in the machine's productivity, taking as parameter the project area and the distance of extraction. The proposed methodology allowed to estimate with precision the distance of extraction, being this variable of great influence in the costs of forest extraction. The evaluated project presented 256.30 hectares of eucalyptus plantation, divided into 10 plots, with an extraction mean distance of 200 meters. According to the study, it would require the value of US$ 102,575.33 for the extraction of the wood from the project evaluated.

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“…O acompanhamento das operações e fases foi in loco, conforme o andamento normal das atividades na empresa, sem qualquer interferência. Dividiu-se os tempos gastos durante a jornada de trabalho em cinco categorias, conforme proposto por Lacerda (2015).…”

Section: Operações E Fases Estudadasunclassified

Análise Comparativa Da Colheita Florestal Em Regime De Manejo De Alto Fuste E Talhadia

Alves

Fiedler

Goncalves

et al. 2018

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No setor florestal é muito comum a discussão que a colheita em regime de manejo de talhadia proporciona menor produtividade das máquinas que no regime de alto fuste. Porém, os trabalhos na literatura são muito escassos para comprovar tal afirmação. Objetivou-se no presente trabalho realizar uma análise comparativa da colheita florestal mecanizada em área de regime de manejo de alto fuste e talhadia, analisando os parâmetros técnicos do harvester (colhedor florestal). A pesquisa foi realizada em áreas de colheita de eucalipto, no município de Aracruz, Espírito Santo. Foram avaliados dois tratamentos, sendo eles: talhadia e alto fuste. Utilizou-se quatro máquinas do mesmo modelo, com os mesmos operadores, durante quatro dias de trabalho em cada tratamento, sempre no primeiro turno, totalizando 16 repetições em cada tratamento. A comparação das médias foi feita utilizando o teste t, em nível de 95% de probabilidade. Não observou-se diferença significativa entre a produtividade da máquina em regime de manejo de talhadia e alto fuste. Entretanto, o número de quedas de corrente para a colheita em talhadia foi 1,59 vezes maior e estatisticamente significativo.Palavras-chave: rebrota, corte florestal, reforma, eucalipto. COMPARATIVE ANALYSIS OF FOREST HARVESTING OF TALL TREES REGIME AND COPPICE ABSTRACT:In forestry companies, it is common the discussion that in coppice harvesting occurs losses in machine productivity, although the works in the literature are very scarce to prove such a claim. The objective of this work was to perform a comparative analysis of mechanized forest harvesting in the area of tall trees and coppice management regime, analyzing the technical parameters of the forest harvester. The research was conducted in eucalyptus cutting areas in the county of Aracruz, Espirito Santo. Two treatments were evaluated, namely: coppice and tall trees. Four machines of the same model were used, with the same operators, for four working days in each treatment, always in the first shift, in a total of 16 repetitions for each treatment. The comparison of means was performed using the t test, at a 5% level of probability. No difference was observed between the productivity of the machine in coppice management regime and tall trees, however, the number of chain falls for coppice harvesting was statistically significant (1.59 times higher).Keywords: regrowth, forestry, reforestation, eucalyptus. DOI:

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Análise Operacional da Extração Florestal Mecanizada em Módulos Próprios e Terceirizados

Cited by 4 publications

References 4 publications

Operationalanalysis of Mechanical Cut-to-Length Forest Harvesting System

Operationalanalysis of Mechanical Cut-to-Length Forest Harvesting System

Geotechnology as a Planning Tool in the Determination of Forest Extraction Costs

Análise Comparativa Da Colheita Florestal Em Regime De Manejo De Alto Fuste E Talhadia

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