Automation of planning of the initial timber floating in flat raft sections

Efficient and cost-effective performance of the initial timber floating is provided by scientifically sound planning of rafting operations. A specialized computer program has been developed to carry out operational planning of the initial timber floating in improved flat raft sections. It makes it possible to calculate the transport and operational indicators of flat raft units depending on the transport conditions, the parameters of the round timber, the physical and mechanical properties of the raft wood, the percentage of wood with increased and limited buoyancy, and the type of raft bracing used. The program also allows plotting the dependence of the depth of the flat raft immersion on the main factors affecting this indicator. Computer-aided planning of the initial timber floating was implemented in improved flat raft units during freestyle rafting for conditions when the dimensions of the floating route change during navigation. It is established that in the spring and autumn when the minimum depth of the floating route varies from 2.0 to 1.4 m and the minimum width of the floating route varies from 10.0 to 8.8 m, the design of a flat raft made according to RF patent No. 2777676 should be used. In the summer, when the dimensions of the floating route for a long period of time are of a minimum value, that is, the minimum depth of the floating route is 1.3 m, and the minimum width of the floating route is 8.6 m, the design of a flat raft unit made according to RF patent No. 210485 should be used. The application of the developed computer program allows automating the operational planning of the initial timber floating in flat raft sections.