Authors: A.Y. Voronov, V.I. Nesterov, Yu.E. Voronov, V.G. Romashko, A.Y. Voronov

Title of the article: Comparative assessment of the operation quality of shovel-truck systems at open-pit coal mines in the summer and transitional seasons

Year: 2021, Issue: 2, Pages: 11-16

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622.23.05

DOI: 10.26730/1816-4528-2021-2-11-16

Abstract: The urgency of the discussed issue. The operation quality of shovel-truck systems (STSs) at open-pit coal mines in the summer and transitional autumn-spring periods differs markedly. This is due to a decrease in the speed of haul trucks during the transitional season compared to the summer season. This leads to an increase in the travel time of trucks. Shovels and trucks must work longer to ensure the planned volumes of loading and transportation and the required number of hauls. Consequently, the duration of the working shift (or day) increases. This leads to a deterioration in the STS performance in the autumn-spring period. A quantitative assessment of changes in the STS operation quality will reveal the directions of its improvement.
The main aim of the study. Comparative assessment of the STS operation quality at open-pit coal mines of Kuzbass in different periods of operation.
The methods used in the study. Modern methods of data collection and processing, mathematical modeling, analysis and synthesis were used.
The results. Comparative analysis of the STS operation in the summer and autumn-spring periods shows that the duration of truck hauls in the autumn-spring period is on average 11,0% longer than in the summer period; truck loading time does not change; the functional criterion decreases by 11,0%, and the generalized quality factor of the STS operation decreases by 14,8%. The functional criterion values acceptable for the mining industry are 0,9 and higher. The value of the generalized indicator of the STS operation quality in this case exceeds the best one achieved by the Company at the optimal values ​​of the truck haul duration by 29,5% and the average one in the Company by 50,7%. The use of even the worst option at the maximum possible value of the haul duration gives an increase in the functional criterion by 9,4%, and in the value of the generalized indicator of the STS operation quality – by 17.2%.

Key words: shovel-truck systems operation quality criterion operation quality optimization of indicators summer and transitional periods of operation

Receiving date: 02.02.2021

Publication date: 29.04.2021

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