Authors: S.M. Nikitenko, E.A. Khudyntsev, S.A. Kizilov, V.Yu. Grigorenko

Title of the article: Device for releasing coal to the conveyor

Year: 2020, Issue: 3, Pages: 55-61

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622.23.05

DOI: 10.26730/1816-4528-2020-3-55-61

Abstract: The article provides an analysis of world practice in the evolution of technologies for the development of thick coal seams. At the same time, a layer-by-layer cut and a cut for the entire thickness of the formation are compared. It is shown that longwall mining systems with layered coal mining by mechanized complexes are practically not used due to low efficiency. They were replaced by the technology of developing seams at full capacity with top coal caving to the face conveyor, using the physical effect of the destruction of the coal stratum due to the forces of rock pressure. In the last decade, this has allowed the mechanized complexes to be given additional functions related to the control process of extracting coal located above the support or caving behind it. The authors analyzed patent documentation in the leading coal-mining countries for methods and devices that provide the possibility of developing coal seams with coal release method. The article presents the results of the research of scientific and technical information and an overview of the means that provide an increase in the efficiency of mining reserves of thick seams with the top coal caving technology. Various types of feeder designs are shown and recommended

Key words: coal deposit underground mining a thick seam longwall top coal caving method the robotic complex gas control the assessment of accident risks environmental and economic efficiency

Receiving date: 01.07.2020

Publication date: 04.09.2020

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