Abstract
The technological processes of mining enterprises are largely energy-intensive; therefore, studying the modes of power consumption in different sites of a mining enterprise is a relevant task, as it makes it possible to reduce current costs. The article presents the results of an experimental study of the dynamics of changes in the specific power consumption depending on per-shift indicators of extracted rock volume and the rate of mine workings penetration. The analysis of geological, technological and organizational factors affecting the efficiency of mining operations in coal mines is performed. Energy technological profiles and recommendations for assessing sustainable levels of power consumption by mechanized tunnelling complexes are given. Dynamic and predictive models of power consumption have been developed taking into account the main time trends and additive components within the limits that ensure a steady level of power consumption. Special recommendations on improving the efficiency of power consumption during mining operations are given.
Highlights
The efficiency of mining enterprises is determined by the technical level of mechanization and automation of mining technological processes
The analysis showed that in the process of Mining workings tunnelling (MWT) conducting, there were violations of the operating modes of tunnelling complexes for both technological, technical and organizational reasons [7, 8]
The range of changes in the indicators for the specific power consumption relative to the rock mass ω1and relative to the drivage ω1 has a wide range of values, because direct extraction of the rock mass as part of the technological process is determined by its volume, rock density, degree of loosening and fullness of loading of the bucket or loading machine’s feeding table
Summary
The efficiency of mining enterprises is determined by the technical level of mechanization and automation of mining technological processes. The intensification of mining in promising mines due to the technical re-equipment of heading and tunnelling complexes requires significant changes in the conduct of preparatory and mining operations. This concerns the progressive combine method, because the level of combine tunnelling in leading coal mines ranges from 72 to 98%. Mining workings tunnelling (MWT) in the conditions of coal mines are currently being developed intensively both in terms of increasing the volume of work performed and the rate of the workings’ drivage, which is reflected in the increase in the energy intensity of technological processes and the amount of power consumed. In accordance with the Long-Term Program for the Development of the Russian Coal Industry for the Period Until 2030 (LP-2030), widespread introduction of energy and resource-saving technologies in the field of coal mining is envisaged on the basis of deep modernization of the industry in the field of digitalization, automation, power and resources saving, etc. [4, 5, 6].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
