Authors: A.N. Starodubov

Title of the article: Design parameters of equipment for the technology of extracting thick seams

Year: 2025, Issue: 5, Pages: 88-96

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 004.942; 622.3

DOI: 10.26730/1816-4528-2025-5-88-96

Abstract: n accordance with the Energy Strategy of the Russian Federation, coal continues to be the second most important energy resource in the world, second only to oil. About 40% of global electricity is generated from coal, which reserves exceed those of oil and natural gas. In the domestic market of Russia the main consumers of coal are electric power plants and coke-chemical plants. The underground mining method maintains a stable position, ensuring the extraction of the most valuable and export-oriented rank of hardcoal deposited in thick seams. When implementing the technology of dredging thick seams with coal output, the main criteria determining it are the requirements for the volume of output and automation of work, as well as ensuring safety and increasing the efficiency of the mining face operation. The successful development of this promising area of geotechnology directly depends on the correct substantiation of special types of mechanized powered roof supports. The substantiation and creation of such support is based on studying the mechanism of movement of the released coal through the mechanized support. The work is aimed at substantiating and developing technical and technological solutions for mechanized supports implementing the coal output technology, which is an actual scientific and practical task. Structurally the mechanized powered roof support section can have different designs and be used in different mining and geological conditions. Based on the developed numerical models experiments were performed to study and substantiate the optimal parameters of the mechanized support section for possible mining and geological (thickness of the roof strata, influence of the main roof) and mining engineering conditions (width of the output window, angle of the feeder inclination, number of movements for one output, wear resistance of structural elements, system of dust control).

Key words: subsurface mining under-roof coal output mechanized powered roof support numerical simulation discrete element method wear resistance dust control

Receiving date: 29.08.2025

Approval date: 30.08.2025

Publication date: 09.10.2025

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