Authors: M.N. Lapaev, V.A. Gogolin, D.M. Dubinkin, S.O. Markov, M.A. Tyulenev

Title of the article: Modeling of face block parameters in different mining and geological conditions when using backhoes and dump trucks with 240 tons payload capacity

Year: 2024, Issue: 2, Pages: 104-116

Branch of knowledge: 2.8.8 Mining machines, geotechnology (engineering)

Index UDK: 622.271.3

DOI: 10.26730/2618-7434-2024-2-104-116

Abstract: In this paper the potential change of parameters of the open-pit mining system depending on mining and geological conditions is studied. Liebherr R9150 backhoe type excavator in combination with BelAZ-7531 dump truck was taken as an example. The results of the study, performed with the use of the developed mathematical model, allowed to obtain the dependences of the width of excavation blocks and their volumes on the slope angles of the excavated layers in relation to the operating parameters of the selected excavation-loading equipment. The task was reduced to finding the coordinates of one of the points of the vector directed at a certain angle – the angle of dip of the seam, the angle of natural slope of the rock (for example, when developing a blasted rock mass), etc. Since the effective productivity of the excavator has a direct dependence on the volume of the excavation block, the values obtained make it possible to predict the time of mining a particular section of the ledge (rock-coal panel) to use the results obtained in the current planning. Also, the developed model indirectly allows to take into account the change of dump truck parameters by checking the possibility of lower loading at the same parameters of the flowsheet.

Key words: open-pit mining backhoes face block quarry dump truck excavator-automobile complex height of excavation layer rock-coal panel

Receiving date: 18.05.2024

Approval date: 04.06.2024

Publication date: 29.08.2024

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