Abstract

The model of river channel for timber transportation allows the most efficient delivery of timber to consumers; ensures the minimization of material loss and negative environmental impacts. The model is especially useful in case of rivers with short shipping season, since the delivery of goods is carried out in a very limited time frame when the levels change dynamically, when the shipping conditions are rarely favorable and when the information about the transport dimensions is absent. Information received from the pilot charts when the levels differ from the design ones is worth being verified, which might be time consuming. However, with the help of these charts and at rather low cost the model can be designed. The purpose of this work is to solve the aforementioned issue. The simulation model under study differs from most digital surface models. The riverbed is depicted as a combination of its cross sections. They are connected by a line passing through the water surface at a design level above the waterway. According to the size of the channel and radius of waterway curvature, the allowable raft sizes are calculated. The minimum sizes are referred to for calculating the route.

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