Vasiliev V., Afonichev D. Investigation of the stacking factor of an improved flat-flow unit // Resources and Technology. 2025. №1, Vol. 22. P. 90‒104.

Investigation of the stacking factor of an improved flat-flow unit

Vasiliev
Vladimir Viktorovich

Federal State Budget Education Institution of Higher Education «Voronezh State Agrarian University named after Emperor Peter the Great», vasiliev.vladimir87@mail.ru

Afonichev
Dmitry Nikolaevich

Federal State Budget Education Institution of Higher Education «Voronezh State Agrarian University named after Emperor Peter the Great», dmafonichev@yandex.ru

Key words:
round timber; flat float unit; volume; stacking factor

Summary: Timber rafting according to transport and technological schemes operating on the basis of flat raft units requires the improvement of the designs of the float units and the determination of their main transport and operational indicators. The design of a flat float unit has been developed, its distinctive feature being rows of round timber laid perpendicular to each other with the obligatory stapling of the extreme round timber of the first (lower) and third rows, as well as the second and fourth rows. Establishing a stacking factor is required when calculating the main transport and operational indicators of an improved flat-flow unit, namely its draft during a specific period of time and the content of the actual volume of wood in it. The authors determined experimentally the stacking factor of a flat raft unit for various diameters of round timber in the upper segment, from which the rows of the raft unit are assembled. The experimental work was performed according to the experiment planning matrix, which was built according to the functional scheme of the experiment, taking into account the qualitative and quantitative factors affecting the experiment. At the same time models of a flat float unit were used, and all data obtained for the model were converted proportionally for a flat float unit of natural dimensions. Eventually a graph of the dependence of the unit stacking factor on the diameter of round timber in the upper segment was constructed. Based on the obtained graph, it was found that with an increase in the diameter of round timber in the upper segment, from which the rows of the unit were assembled, the stacking factor increased. Moreover, the most intensive increase in the unit stacking factor was observed when the diameter of round timber in the upper segment increased from 10.0 to 30.0 cm. The use of the obtained experimental and calculated data of the stacking factor might allow more accurate determination of the required transport and operational indicators of the improved flat-flow unit, which will ensure the efficient performance of transport work on the initial and main timber rafting.

pdf-version

Displays: 62; Downloads: 37;

Resources and Technology

scientific journal

Investigation of the stacking factor of an improved flat-flow unit