Modelling Productivity in Extraction Operations by Simulations Based on GNSS Documented Data: An Example from Skidding Teak Wood In Thailand

In Thailand, teak harvesting always includes skidding of tree-length stems from the landing to log yard for further processing. When terrain does not set limitations machines be used, is carried out by farm tractors. this study, data was collected 10 work cycles extraction simulate productivity The GNSS as speed and locations were used extract operational distances time consumption, well support simulation. For this, detailed measurements done on extracted collect their diameters lengths. approximately six per load, mean load size 1.723 m3. study found that 17.4 m3/h during survey, where distance 217 m. Our simulation presents diagrams in relation distance. By simulation, we detected reducing full 1 km/h would decrease when less than 100 Another observation even small reductions sizes have a remarkable effect over short distances. Until large-scale studies are evaluate variations distance, results shown herein could stand basis assessments.