Mathematical model of the technological process of unloading cargoes on the unequipped coast with the use self-assemblable pontoons
When solving problems in the online mode for the organization, planning and management of maritime cargo transportation, situations often arise when the transport system is a complex interaction mechanism. To carry out an adequate description of the functioning of such a complex system using the traditional classical mathematical apparatus is not possible, and carrying out full-scale tests is costly. One of the possible ways to overcome this problem is the use of mathematical modeling methods. In this article, an analysis was made of the conditions and methods for unloading cargo in off-port conditions using the example of the United States, and the transport and technological systems for unloading cargo on an unequipped coast using various offshore watercraft were considered. As a result, a transport and technological scheme for unloading cargo on an unequipped coast was proposed as a maximization of the total number of cargo units of a given category delivered to an unequipped coast for a certain period of time, and as the main means of delivering material assets in non-port conditions are self-dismounting pontoons, from which a floating berth is formed, which allows unloading material resources on an unequipped coast. The basis of the mathematical model of the transport and technological system for unloading cargo on the unequipped coast of the Arctic zone of the Russian Federation using self-collapsing pontoons is the method of a generalized downward gradient. In the model under consideration, the initial data, the conditions for the model's performance, as well as its calculated characteristics are indicated. In the process of modeling the transport and technological system using self-collapsing pontoons, calculations were made of the duration of technological operations and the cost characteristics of technological resources.