Productivity of a Portable Winch System Used in Salvage Logging of Storm-Damaged Timber
Yükleniyor...
Dosyalar
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Zagreb Univ, Fac Forestry
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Storm damages result in serious losses in many regions, primarily by stem breakage or blow-down. Extraction of storm-damaged trees often requires more difficult than normal skidding activities due to obstacles created during the storm. In this study, the productivity of a portable winch was evaluated as a possible alternative to recover storm-damaged timber. Field measurements were conducted in the Alabarda Forest Enterprise Chief located near the city of Kutahya in western Turkey, where storm damage often occurs during the winter season. The time study was implemented in two slope classes (35% and 55%) and two skidding distances (40 m and 60 m). All timber was skidded uphill. A regression mode was developed that related productivity to log volume, ground slope and skidding distance. The highest percentage of total cycle time was observed for skidding logs to the landing. The highest productivity (3.96 m(3)/hour ) was found at the shorter skidding distance (40 m) and the lower ground slope (35%). Statistical analyses indicated that productivity was most highly affected by log volume, followed by skidding distance and ground slope. Larger log loads increased productivity, while both longer skidding distances and steeper slopes reduced productivity.
Açıklama
Anahtar Kelimeler
salvage logging, storm damage, portable winch, productivity
Kaynak
Croatian Journal Of Forest Engineering
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
40
Sayı
2
