Methodological approaches to the selection of mining equipment in the course of modernization of the mine

The Balance and Optimization Model of Coal Supply in the Flow Representation of Domestic Production and Imports: The Ukrainian Case Study

“…The DG brand may be imported from the far afield countries-Australia, Indonesia, the USA (nodes 44, 45, 46, 47, respectively), and nearby countries-Russia, and also from the territory of Ukraine, which is currently not controlled by the state government (nodes 48, 53). The possible sources of brand G imports are Australia, Russia, and the territory of Ukraine, which is currently not controlled by the state government (nodes 40,41,52). This structure of imports is proposed as a result of the mentioned coal brands' availability in the markets of these countries.…”

“…In such a situation, in order to meet the needs of thermal power plants, most of the power units in Ukraine operate on coal fuel, so it is necessary to import missing volumes. At the same time, considering the coal balance as a whole, especially in the context of the tasks of general energy supply by all types of fuel and energy resources, forecasting the volume of supply of energy carriers under conditions of economic growth, their economically expedient or forced mutual substitution, as well as taking into account energy security criteria, it is necessary to be able to review the composition of the mining capacities of the coal industry, its expansion through the construction of new mines, as well as the restoration of the previously closed unprofitable mining enterprises [41][42][43][44]. The usual logistics schemes will also be subject to revision in connection with political and security (military) restrictions on import supply routes.…”

Consideration of environmental constraints in modeling the development of coal industry

“…Варіанти оптимальної комплектації очисних комплексів, визначені за методикою [10] представлено в табл. 1 При впровадженні високопродуктивних вітчизняних технологій у видобуток вугілля в лавах з пологим заляганням пластів застосовуються варіанти комплектації очисних комплексів 1-7 (1 Г -7 Г ), які передбачають використання найбільш прогресивної стовпової системи розробки пластів з довжиною лав 200-350 м. На крутих пластах найбільш ефективним виявляється застосування щитових агрегатів за варіантами 8 і 9 (8 Г , 9 Г ція застарілого шахтного обладнання, будуть інвестовані кошти в нові технології, підвищиться продуктивність праці.…”