Authors: V.F. Kolesnikov, A.I. Koryakin, V.A. Ermolaev, V.F. Voronkov

Title of the article: Creation of excavation and loading complexes and technological schemes of mining operations in coal-bearing zones of open-pit mines

Year: 2023, Issue: 2, Pages: 26-58

Index UDK: 622.271.3

DOI: 10.26730/2618-7434-2023-2-26-58

Abstract: The quarry fields of Kuzbassrazrezugol Coal Company JSC are represented by a complex rock-coal rock massif including both purely coal-free and coal-bearing zones. The greatest technological complexity is the development of coal-bearing zones. Application of traditional classic schemes leads to significant losses and dilution of mined coal, reducing the efficiency of surface coal mining. Peculiarity of mining of coal-bearing zones of open pit fields is the presence of complex rock-coal benches, including coal seams of simple and complex structure, different conditions of occurrence, which mining requires the use of several excavation and loading machines and auxiliary equipment. Equipping of mines with powerful high-performance excavation and loading machinery for mining of homogeneous overburden benches is connected with the necessity of their cutting with increased height. In this regard, the mining of coal-bearing zones of quarry fields should meet these requirements with the application of a complex of excavation and loading machines in various combinations. In the technical literature, there are no methods for determining the parameters of technological schemes of mining complex rock-coal blocks by the complex of excavation and loading machines in various combinations, which determines the need to develop methodological provisions for these conditions. This paper presents methodological provisions for substantiation of the main parameters of technological schemes for mining complex rock-coal blocks by mine-loading-transporting complexes.

Key words: coal-bearing zone coal-free zone quarry rope shovels hydraulic excavators open-pit mining coal-and-rock blocks excavation and loading operations structural schemes

Receiving date: 27.03.2023

Approval date: 20.06.2023

Publication date: 24.08.2023

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