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

Title of the article: Estimation of the degree of mutual influence of the excavator bucket capacity and haul truck body

Year: 2021, Issue: 3, Pages: 104-112

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

Index UDK: 622.271.3

DOI: 10.26730/1999-4125-2021-3-104-112

Abstract: From the classic works on open pit mining we know the long-established rational combination of excavator bucket capacity and haul truck body – 4-6 buckets. This value was obtained by analyzing the experience of joint operation of the equipment in real conditions back in the 60s of the last century, and since then practically has not been subjected to adjustment. However, we should note the fact that at that time there was not such a variety of equipment sizes, especially for haul trucks. In addition, a new type of excavation and loading equipment appeared: hydraulic excavators, for which this ratio was accepted, in fact, automatically. This article presents the results of a preliminary study of the mutual influence of excavator bucket capacity and haul truck body in terms of changes in the effective productivity of these mining machines. For the analysis we used excavators of the same manufacturer with a bucket capacity of 7.2 and 15.3 m³, respectively. It is established that for excavators with smaller bucket capacity the productivity doesn't have strongly pronounced dependence on haul truck body capacity while for larger models the difference can reach up to 25% and more at application of haul trucks with carrying capacity, in particular, 55 and 90 tons. Also, the variant of the effective productivity calculation of the single excavator model with three different haul trucks is considered. It is concluded that a more detailed calculation of the parameters of excavator-truck complex to ensure its effective operation is necessary.

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

Receiving date: 01.06.2021

Publication date: 02.07.2021

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