Spravilo lesa iz pomlajenih sestojev na obmocju Novomeškega Roga : diplomsko delo - visokošolski strokovni študij

Mikec, Sebastjan (author), Košir, Boštjan (mentor)

Meritve za izdelavo diplomske naloge so potekale avgusta, septembra in oktobra leta 2009 v kraju Podturn, v gozdno gospodarski enoti Poljane. Namen naloge je bila primerjava učinkov, stroškov in primernosti prilagojenega kmetijskega traktorja John Deere 6220 ter zgibnega polprikoličarja (forwarderja) John Deere 1410 ECO III pri spravilu lesa iz pomlajenih sestojevna območju Roga. Narejena je bila tudi časovna študija dela. V oddelku 43 sta bila postavljena 2 stratuma s podobno površino. V stratumu B1 je potekala klasična sečnja z motorno žago in spravilo lesa s traktorjem. V stratumu A2 pa kombinacija strojne in klasične sečnje z izvozom lesa s forwarderjem. Zavod za gozdove Slovenije je pred začetkom dela opravil odkazilo dreves za posek, opravljene pa so bile tudi meritve dolžin ter naklonov vlak. Med izvajanjem klasične sečnje so bili vsi sortimenti oštevilčeni in izmerjeni njihovi volumni, v drugem stratumu pa so bili izmerjeni med spravilom lesa. Rezultati meritev so pokazali, da na učinkovitost in posledično na stroške v največji meri vplivajo morfološke lastnosti terena, koncentracija lesa na dolžini vlake ali na enem mestu (mestonakladanja), dolžina spravila ter volumen posameznega sortimenta. Učinki traktorja so 9,48 m3/obratovalno uro oziroma 7,26 m3/delovno uro, forwarderja pa 25,6 m3/obratovalno uro oziroma 22,98 m3/delovno uro. Stroški spravila lesa s traktorjem znašajo 5,75 /m3/obratovalno uro oziroma 5,63 /m3/delovno uro. Pri spravilu lesa s forwarderjem pa so stroški 4,89 /m3/obratovalno uro ali 4,09 /m3/delovno uro. Glede primernosti traktorja za spravilo lesa iz jelovo - bukovih sestojev je bilo ugotovljeno, da je traktor primeren in kljub veliki stopnji kamnitosti in skalovitosti dosega dobre učinke. Izbrani tip forwarderja pa se je izkazal kot dobro prilagojen za spravilo težkih bremen.

• Language: Slovenian
• Keywords: spravilo lesa, traktorji, gozdarska mehanizacija, zgibni polprikoličarji, učinki, stroški
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [S. Mikec]
• Year: 2011
• Number of pages: VIII, 62 f.
• PID: 20.500.12556/RUL-16033
• UDC: 630*37(043.2)=163.6
• COBISS.SI-ID: 3292070
• Publication date in RUL: 11.07.2014

Secondary language

• Language: English

Abstract

The measurements for the thesis were taken in August, September and October 2009 in the settlement of Podturn, in forest management unit of Poljane. The objective was to compare the productivity, costs and suitability of adapted farming tractor John Deere 6220 and of forwarder John Deere 1410 ECO III at wood extraction from regenerated stands in the Area of Rog. A time work study was also implemented. In the department 43, two stratums with similar surface were set up. In stratum B1 we used classical felling with chainsaw and wood extraction with tractor. In the stratum A2 we used a combination of machine and classic felling and exported the wood with forwarder. The Slovenian Forest Service marked the trees for the clearing before the beginning. The measurements of length and slope of trails were also implemented. During the classic felling, al the assortments were numbered and their volumes were measured; in the second stratum they were measured during the wood extraction. The results of the measurements have shown that the main influences on the efficiency and costs are the morphologic properties of the ground, concentration of wood throughout the length of the trail or on one spot (the place of loading), the length of extraction and the volume of individual assortment. The effects of tractor are 9,48 m3/operating hour or 7,26 m3/working hour, and of the forwarder are 25,6 m3/operating hour or 22,98m3/working hour. The costs of wood extraction with tractor are 5,75 /m3/operating hour or 5,63 /m3/working hour. For wood extraction with forwarder, the costs are 4,89 /m3/operating hour or 4,09 /m3/working hour. Use of tractor for extraction of fir-beech stands was estimated as suitable, as the tractor obtains good results despite the high levels of stoniness and rockiness. The selected type forwarder proved to be well adapted for extraction of heavy loads.