The Choice of Technology and Equipment for Coal Seams of Different Bedding Excavation at Kuzbass Surface Mines Based on Digging Capacity and Unit Costs

technological schemes for the extraction of coal seams of different
bedding by excavators of high specific productivity. A wide variety
of mining and geological conditions for the coal seams bedding in the
quarry fields of Kuzbass (Western Siberia, Russia) determines the
use of a variety of high-performance excavation (rope and hydraulic
shovels, hydraulic backhoes, draglines) and transport (dump trucks,
railway trains, draglines) equipment used in various technological
schemes. The problem lies in the choice of the excavator type and the
technological scheme of its use for extracting coal from seams with
different dip angles and thickness within the boundaries of one quarry
field in order to achieve maximum productivity and economic
efficiency of the entire site development. This article substantiates
the analysis of the present and promising coal mining technologies
using mechanical shovels, draglines and hydraulic backhoes in order
to determine the optimal technological schemes for specific
conditions. The basic principle of the proposed idea is to ensure the
maximum ratio of the excavator's actual performance and unit costs,
taking into account geological conditions and coal loss during
extraction. In this regard, based on the analysis, the article presents
recommendations for choosing a technological scheme when
replacing equipment based on mining and geological conditions.
Under certain circumstances, the analysis may result in a
recommendation for a complete replacement of the excavator fleet.
The advantage of the presented method, along with computational
efficiency and visualization, is the applicability for the analysis of
technological schemes of any complexity, which makes it possible to
use it for the design of sections that develop complex-structured coal
deposits