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Title: Methodology for planning log stacking using geotechnology and operations research
Other Titles: Metodologia para planejamento das pilhas de madeira utilizando geotecnia e pesquisa operacional
Keywords: Sistema de informação geográfica
Programação linear
Geographic information system
Linear programming
Log stacking
Issue Date: 2013
Citation: LIMA, M. P. de et al. Methodology for planning log stacking using geotechnology and operations research. Cerne, Lavras, MG, v. 17, n. 3, p. 309-319, jul./set. 2011.
Abstract: In view of the need to improve the planning of timber harvest and transportation, with both activities being the most infl uential in determining the fi nal cost of timber delivered to the mill yard, this work aims to develop a new methodological proposal using operations research and geotechnology tools in order to determine optimal locations for log stacking and also the amount of timber to be allocated to each selected stack. Analysis was performed using two software applications, geographic information system (GIS) and operations research (OR). GIS spatial analyses were based on layers of the study site, which is a property owned by Votorantim Celulose e Papel, located in the municipality of São José dos Campos, in order to obtain three variables: degree of diffi culty in operating forestry equipment, degree of diffi culty in log stacking, and distance between log stacks and existing roadways. To obtain these variables, layers containing information on terrain inclination and existing roadways were combined in another analysis named weighted overlay. Results were then fi ltered and inserted into an operations research environment for maximization of the timber volume in each selected stack. With results obtained from the geographic information system, 80 potential sites were selected for log stacking. By using operations research, 59 of these sites were ruled out, a 73% reduction in the number of potential sites, with only 21 sites remaining as potentially optimal for log storage. For each of these 21 sites, an optimal amount of timber was determined to be allocated to each one of them.
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