Justification of rational modes of operation of quarry dump trucks in case of over-normative operation

The research aimed at determining the rational intensity of loading of open-pit dump trucks in order to reduce losses caused by equipment downtime in difficult mining conditions is presented. The study includes the collection and analysis of data on the operation of dump trucks, including the values of the daily turnover of cargo, parameters that characterize the downtime of equipment, as well as the anticipated causes of failure of dump truck units. As a result of processing the collected data, a mathematical model based on a system of two equations was developed, where the first equation reflects the dependence of the number of days of predicted downtime of the dump truck on cargo turnover and the degree of dump truck overload, the second equation shows the dependence of cargo turnover on the degree of dump truck overload and the duration of the preceding overload. Thus, the developed model allows you to establish a rational intensity of dump truck overloading, which reduces the probability of failure and reduces the duration of possible downtime. The model was tested on data on the operation of dump trucks in difficult mining conditions by comparing predicted and actual downtime values. According to the results of the study, an analysis of the graphs of monthly productivity and downtime of dump trucks for various reasons of failure of dump trucks. Based on the results, recommendations on substantiation of rational intensity of exceeding the normative load of dump truck in order to reduce the total number of equipment downtime and thus reduce possible losses have been developed.

Vishnyakov G. Yu., Pushkarev A. E., Botyan E. Yu., Khloponina V. S. Justification of rational modes of operation of quarry dump trucks in case of over-normative operation. MIAB. Mining Inf. Anal. Bull. 2023;(11-1):24-37. [In Russ]. DOI: 10.25018/0236_1493_2023_111_0_24.

G.Yu. Vishnyakov¹, Graduate Student, e-mail: geroibeka@yandex.ru, ORCID ID: 0000-0001-5050-4491, 
A.E. Pushkarev, Dr. Sci. (Eng.), Professor, Saint-Petersburg State University of Architecture and Civil Engineering, 190005, Saint-Petersburg, Russia, e-mail: pushkarev-agn@mail.ru, ORCID ID: 0000-0001-5546-015X,
E.Yu. Botyan¹, Graduate Student, e-mail: evgenybotyan@yandex.ru, ORCID ID: 0000-0003-3395-935X,
V.S. Khloponina¹, Cand. Sci. (Econ.), Chief Scientific Secretary, e-mail: Khloponina_VS@pers.spmi.ru, ORCID ID: 0000-0001-9029-2788,
¹ Empress Catherine II Saint-Petersburg Mining University, 199106, Saint-Petersburg, Russia.

G.Yu. Vishnyakov, e-mail: geroibeka@yandex.ru.

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