Influence of longwall length on specific power consumption

Authors: Babokin G I

The analytical estimation procedure is developed for the specific power consumption in a longwall including electrical facilities and a multiengine electric drive of a conveyor line, with regard to the change in the longwall length and in the coal cuttability. The article presents the case-study of a longwall in Alarda Mine, YuzhKuzbassugol, equipped with longwall machine system Glinnik 21/45 with shearer KSW-1140 and scraper conveyor Anzhera-34. The belt transport includes one to 6 series-installed telescopic belt conveyors Pioma V1200S meant for longwalls 450 to 2700 m long. Assessment of the specific power consumption versus the longwall length and coal cuttability finds out that the specific power consumption with the increasing length of the longwall from 450 to 2700 m grows from 2.9 to 4.9 kW·h/t, from 2,2 to 4,0 kW·h/t, from 1,7 to 3,2 kW·h/t, at the coal cuttability of 300, 200 and 100 kN/m. The specific power consumption in coal transport by the belt conveyors varies from 13.7 to 55.8% of the total specific power taken by the longwall equipment with the increase in the longwall length and coal cuttability. The days of longwalling as function of the coal cuttability are found for the longwalls 450 to 2700 m long.

Keywords: shearer, longwall, extraction panel, longwall face, belt conveyor, specific power consumption, power consumed by electrical facilities, longwall capacity, coal cuttability.
For citation:

Babokin G. I. Influence of longwall length on specific power consumption. MIAB. Mining Inf. Anal. Bull. 2023;(5):155-169. [In Russ]. DOI: 10.25018/0236_1493_2023_5_0_155.

Issue number: 5
Year: 2023
Page number: 155-169
ISBN: 0236-1493
UDK: 313:631.371
DOI: 10.25018/0236_1493_2023_5_0_155
Article receipt date: 20.11.2022
Date of review receipt: 03.02.2023
Date of the editorial board′s decision on the article′s publishing: 10.04.2023
About authors:

G.I. Babokin, Dr. Sci. (Eng.), Professor, e-mail:, Mining Institute, National University of Science and Technology «MISiS», 119049, Moscow, Russia.

For contacts:

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