TAILIEUCHUNG - Báo cáo khoa học: "Effect of edging and docking methods on volume and grade recoveries in the simulated production of flitches"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài:"Effect of edging and docking methods on volume and grade recoveries in the simulated production of flitches. | 241 Ann Sci For 1994 51 241-248 Elsevier INRA Original article Effect of edging and docking methods on volume and grade recoveries in the simulated production of flitches CL Todoroki NZ Forest Research Institute Rotorua New Zealand Received 1st September 1993 accepted 9 September 1993 Summary This paper describes edging procedures that have been adapted for use in the pruned log sawing simulation system AUTOSAW developed at the Forest Research Institute New Zealand. Automated sawing simulations were performed on a sample of 20 pruned logs using a standardised sawpattern. These simulations produced a total of 483 flitches of which 221 flitches required edging docking operations to be applied. Methods were developed to maximise volume and grade recoveries. Each method was examined 3 times varying the maximum number of edged pieces from each flitch from 1 to 3 simulating 2 to 4 saws . An increase in total volume of approximately 28 was obtained when the maximum number of edged pieces was increased from 1 to 2 and a further 4 increase in volume when increased from 2 to 3. edging docking volume optimisation grade optimisation Resume Effets des méthodes de délignage et de rognage sur les rendements en volume et en classe de qualité dans la production de plots obtenus par simulation. L article décrit les procedures de délignage qui ont été adaptées pour leur emploi dans AUTOSAW un systems de simulation de sciage de grumes élaguées développé à Tlnstitut de recherches forestieres de Nouvelle-Zelande. Des simulations automatlsées de sciage ont été réalisées sur un échantillon de 20 grumes élaguées en utilisant un plan de debit standard. Ces simulations ont produit un total de 483 plots dont 221 pour lesquels des operations de déHgnage et de rognage ont Sts requises. Les méthodes ont été développées afin de maximiser les rendements en volume et en classe de qualité. Chaque methode a été examinee 3 fols en faisant varier de 1 à 3 Is nombre maximum de pieces délignées dans .

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