Coal industry in the context of Ukraine economic security

Abstract

Purpose. To rate the main factors and indicators of the national economic security, in particular the degree of the country's provision with primary natural resources which determine the global energy consumption trends.Methods. Analysis of components comprising the fuel and energy complex of Ukraine in view of survivability and heuristic algorithm for finding economically feasible reserves. The problem of finding the optimal flow distribution is solved by graphs.Findings. Emergencies are ranked in the descending order of optimal flows in the normal mode, the sorting sequence is defined, which results in the optimal solution via a minimum number of the algorithm computational steps. Originality.A universal algorithm for the development of fuel and energy complex of Ukraine has been designed. Practical implications.It was found that the vitality of integrated energy systems can be defined as the property to resist a large scale external disturbance, maintaining the ability to operate with acceptable performance and backup indicators. When considering large energy systems, the levels of the industry reserve can be reduced due to interchangeability of energy resources.

Productive flows control in coal mines under the condition of diversification of production

“…The result of the production activity of the underground complex of mining operations is the production on the surface of four productive components, which from the viewpoint of rational resource and nature management can be considered on the one hand, as factors that can have a negative impact on the environment. These components are: coal, rock, mine water and pit gas [1,2]. Considering their dynamic nature, it is expedient for the mathematical description of moving processes of coal (C), rock (R), pit gas (G) and water (W) to present them as flows in some technological system of converters.…”

“…As can be seen in the expression (1), all components are positive, then minimization of the sum means minimization of each summand. The minimization of the first summand C is equivalent to the decrease in ash content and damage from surface underworking to the minimum permissible value.…”