Authors: M.A. Tyulenev, S.O. Markov, A.V. Katsubin, V.V. Aksenov, S.D. Dubinkin

Title of the article: To define the application area of unmanned quarry dump trucks with payload capacity of 220 tons

Year: 2023, Issue: 4, Pages: 91-102

Index UDK: 622.271.3

DOI: 10.26730/2618-7434-2023-4-91-102

Abstract: It is known from the brochures of companies-manufacturers of excavation and loading equipment for surface mining, namely hydraulic excavators, that they can be equipped with interchangeable working equipment: bucket and stick. The capacity of both the main and interchangeable (replaceable) buckets is tied to the length of the stick, taking into account the provision of a constant value of the end load on the teeth of the bucket. The longer the interchangeable stick, the smaller the bucket capacity, and vice versa. Accordingly, the excavator has several curves of motion (trajectories) of the cutting edge of the bucket teeth, based on which it is possible to select transportation equipment for joint use with this excavator, to determine the height of the bench/subbench/layer, etc. In addition, the density of mined rocks should be taken into account: when working at different horizons, the value of change in the density of bedrock can reach 0.5 t/m³ and more. Taking into account the fact that there is rarely a complete set of interchangeable sticks and buckets for a particular unit of excavation and loading equipment, it can be assumed that in such conditions there is either underutilization of the excavator's working capabilities (when working with denser rock it is necessary to fill the bucket incompletely), or, on the contrary, increased wear of drives and mechanisms. This paper gives the prerequisites for determining the rational area of application of unmanned quarry dump trucks, and also identifies a number of little-studied factors, the joint influence of which leads to a decrease in the efficiency of equipment used at open-pit mining operations.

Key words: open-pit mining quarry dump truck unmanned quarry dump truck rock and coal panel complex deposits excavator productivity oversize lump sustainable development

Receiving date: 15.11.2023

Approval date: 05.12.2023

Publication date: 25.12.2023

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