A formalized model of soil movement on the surfaces of the working bodies of a forest plow for the formation of microhill

Intensive forestry in the boreal forest zone, which occupies about a third of the area of all forest plantations in the world, makes it difficult to carry out high-quality reforestation work on these areas due to active logging. Due to increased atmospheric moisture and low evaporation, a certain part of the soil profiles of the boreal belt is occupied by wetland or temporarily waterlogged land, where reforestation is carried out using a special technology – planting material is planted in discrete or linear microhills, which can be mounds, platforms, ridges or surfaces created by forest plows. Therefore, the development of modern designs of forest plows for effective work on soils with a watering high degree is an important task for domestic forestry engineering. To determine the optimal design and technological parameters of the designed plow, it is advisable to use methods of mathematical modeling and subsequent optimization. The purpose of the work is to substantiate the basic relations of the formalized model of the process of moving soil along the working surfaces of a semidigger body and a spherical disk of a forest plow during the formation of linear microhill. The stages of the process of moving soil masses, according to the verbal model of the plow, are divided into blocks: cutting the soil surface with a bottom ploughshare, turning the surface with a plowshare and the transition of the soil volume to a spherical disk, followed by the descent of the soil from it for laying in microhill. For each block of the model, a formalized description of the processes is performed using the generally accepted physical and mechanical properties of the treated soil medium. The subsequent implementation of the model in the form of a software package for conducting simulation experiments makes it possible to assess compliance with the standards of the geometric dimensions of the transverse profile of the created microhill with various design and technological parameters of the forest plow, as well as the nominal tractor traction power expended, sufficient for cutting and moving over the surface of the semidigger body of waterlogged land.

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