LOG BREAKDOWN OF Eucalyptus grandis WITH CHAINSAW, PART 1 – OPERATIONAL PERFORMANCE ANALYSISi
| Autor: | Djeison Cesar Batista, Rafael Bridi Corteletti, Clovis Eduardo Nunes Hegedus, Graziela Baptista Vidaurre Dambroz |
|---|---|
| Jazyk: | portugalština |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Ciência Florestal, Vol 23, Iss 3, Pp 471-481 (2013) |
| Druh dokumentu: | article |
| ISSN: | 0103-9954 1980-5098 19805098 |
| DOI: | 10.5902/1980509810558 |
| Popis: | http://dx.doi.org/10.5902/1980509810558The aim of this work was to analyze the operational performance of chainsaw log breakdown of Eucalyptus grandis W.Hill, taking into account small scale use, e.g., in small farms, using yield and efficiency as evaluation tools. The specific aim was to analyze the behavior of yield and efficiency in five diametric classes: 20.0-25.9cm, 26.0-28.9 cm, 29.0-31.9 cm, 32.0-34.9 cm and 35.0-41.0 cm. According to the results obtained, the chainsaw log breakdown had a satisfactory operational behavior, with average yield and efficiency of 58,5% and 0.55m³/operator/h, respectively. However, the feasibility of such technique is restricted to small scale use. Diametric class 3 (29.0-31.9 cm) presented the best yield (66.6%) because it was the one that presented the best adequacy between log diameter and products. It is suggested for further researches the development of specific sawing diagrams per diametric class, in addition to the reduction of class ranges, aiming the yield increase. The average breakdown time spent per log was the same for classes 3, 4 and 5, resulting that the latter presented the best efficiency, 0.82 m³/operator/h. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|