Productivity of the yarding operation systems with URUS MIII skyline in Turkey

ÖZTÜRK T.

, Wildlife and Wood Sciences for Society Developments, Czech Republic, 1 - 04 May 2009, pp.10

  • Publication Type: Conference Paper / Summary Text
  • Country: Czech Republic
  • Page Numbers: pp.10
  • Istanbul University Affiliated: Yes

Abstract

Primary transportation methods are three types in Turkey’s forestry, which are human power, animal power and mechanization. Ground skidding by hand (man and gravitation) is applied in small forest areas for extraction of small amount of timber and big amount of fuel wood over short distances. Animal skidding, mainly by horses, mules and oxes, is used for pre-skidding for bunching distance between 20 m and 100 m. Mechanical skidding is carried out by ground based forestry vehicles. Skylines are used for primary transport device. These are Koller, URUS and Gantner. URUS MIII is a mobile skyline. It is efficient, requires less time and fewer hands for installation and  uninstallation.

 

The purpose of this study is to investigate the productivity of the URUS MIII skylines when carrying Spruce timber from mixed forest of Spruce, Scotch pine and Beech tree species in North Eastern Turkey. Skylines productivities are determined by using the methods of work and time study.  The research concludes that some working characteristics of the URUS MIII skylines such as transportation speed of the carriage (loaded and unloaded), load volume, time consumptions of yarding area, fuel consumptions, productivity of the skylines and transport distance have an absolute impact on the productivity of the cable crane.   In this study, URUS MIII skyline’s hour product was 12,900  m³, daily product was calculated as 103,200  m³ in the Arganet yarding area. This skyline’s fuel consumption was 3,5 lt/h. The cost of skyline was 4,13 $/m³ in the Arganet yarding area.