Authors: A.A. Khoreshok, D.M. Dubinkin, S.O. Markov, M.A. Tyulenev

Title of the article: On changes of efficient productivity of excavators when using dump trucks with different body capacity

Year: 2021, Issue: 6, Pages: 85-93

Branch of knowledge: 25.00.22 Geotechnology (underground, open and construction)s

Index UDK: 622.271.3

DOI: 10.26730/1999-4125-2021-6-85-93

Abstract: A significant number of different brands and models of mining haul trucks are in operation at modern coal quarries, with load capacities ranging from 55 to 450 tons. One of the most frequently used models are dump trucks with 120-140 tons capacity. It is caused by optimal, established in practice, correlation of volume of their body and volume of bucket of widespread excavator models. As the basic manufacturer of the mine transport equipment is BelAZ, by virtue of the certain unification of geometrical proportions of the dump trucks' bodies, produced by this manufacturer, the account of their features isn't performed; however the dump trucks' bodies of foreign manufacturers have their own features; so, for example, at equal tonnage of domestic and import model of dump trucks the difference in geometrical capacity of the body can arrive to 20 percent, and on the contrary, when the volume of the bodies are equal, there is a significant difference in payload capacity. Therefore, the task of this paper is to determine the performance of shovel-truck complexes in the quarries when using the same type of excavators and different-type composition of the transport fleet in order to establish the most optimal options. Conclusions are drawn that for excavators with a smaller bucket volume (9,6 m³) the effective productivity at application of dump trucks with payload capacity of 120 and 136 tons differs in certain conditions just on 0,2-0,6% while for a larger excavator model (bucket volume 15,3 m³) this difference makes 0,4-0,96% for the same conditions, that allows to draw a conclusion about expediency of application of dump trucks of smaller payload capacity because of smaller expenses for theirs machine shift.

Key words: Open-pit mining hydraulic excavators haul trucks excavator-truck complex autonomous heavy trucks autonomous dump truck productivity of excavators productivity of haul trucks

Receiving date: 15.09.2021

Approval date: 05.12.2021

Publication date: 24.12.2021

CITE DOWNLOAD