magistrsko delo
Jan Mihelič (Author), Milan Kobal (Mentor), Robert Robek (Co-mentor)

Abstract

Urejanje hudourniških območij in gradnja gozdnih prometnic danes potekajo na erozijsko občutljivih terenih. Za določanje transportnih količin izkopanih hribin je poleg geometrije del nujno poznati tudi pripadajoče raztresne faktorje. V nalogi smo določili povprečne raztresne faktorje za karbonatne nanose, kompaktne karbonatne kamnine in zemljine. Določili smo stisljivostni faktor za kompaktne karbonatne kamnine. Vsako delovišče smo posneli z brezpilotnim zrakoplovom pred izvedbo izkopa ter po vsakih 3 m3 % 1 m3 izkopanega materiala. Dosežena povprečna gostota terenskih točk je znašala 9.535 točk/m2, povprečna natančnost georeferenciranja vseh posnetkov pa % 0,008 m (RMSE). Povprečni raztresni faktor za karbonatne nanose je 15,6 %, za zemljino 20,4 % ter za kompaktne karbonatne kamnine 42,2 %. Povprečni stisljivostni faktor za kompaktne karbonatne kamnine znaša 4,2 %. Ugotovljeni faktorji zemljin in karbonatnih nanosov se dobro ujemajo z razpoložljivo literaturo, faktor za kompaktno karbonatno kamnino pa je za 20 % nižji od podatkov, ki so se do sedaj uporabljali v slovenskem gozdarstvu.

Keywords

gozdno gradbeništvo;zemeljska dela;izkop;nasip;faktor raztresenosti;fotogrametrija;brezpilotni zrakoplov;oblak točk;prostornine zemeljskih mas;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [J. Mihelič]
UDC: 630*38(043.2)=163.6
COBISS: 5574054 Link will open in a new window
Views: 1616
Downloads: 534
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Other data

Secondary language: English
Secondary title: Determining expansion factors for most common materials in forest engineering
Secondary abstract: Arranging torrent areas and building forest roads in Slovenia are mostly happening in steep and erosional areas. For estimating haulage masses is beside the geometry of extrapolated works necessarily to know expansion factors. We have determined expansion factors for carbonate deposits, compact carbonate rocks and gravel. We have also determined average shrinkage factor for mixed soils. Each workplace was recorded with Unmanned Aerial Vehicle (UAV) before the excavation and after every 3 m3 % 1 m3 of excavated material. Average point cloud density was 9535 points/m2. With processing point clouds from each work place we have determined a difference in volume between volume of excavated area and volume of deposited material. Average expansion factor for carbonate deposits is 15.6%, for soil 20.4%, for compact carbonate rock 42.2%. Average shrinkage factor for compact rock is 4.2%. Calculated expansion factors for soils and carbonate deposits are matching with known factors, factor for compact rock is 20% lower than factors that are now using in Slovenian forest engineering.
Secondary keywords: forest engineering;survey;excavation;embankment;bulking factor;shrinkage factor;photogrammetry;dense point cloud;UAV;volume calcuations;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. Ljubljana, Biotehniška fak., Oddelek za gozdarstvo in obnovljive gozdne vire
Pages: X, 69 f.
ID: 11300702