Mining Science and Technology (Russia)
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Activities of the "Mining Science and Technology (Russia)" international journal are aimed at developing international scientific and professional cooperation in the field of mining. Scopus,CAS,GeoRef,Engineering Village,SJR, DOAJ (mst.misis.ru)
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Justification of the air distribution system of a down-the-hole hammer with an efficient operating cycle | P. N. Tambovtsev, E. P. Rusin | 2023;8(4):360–376 | https://doi.org/10.17073/2500-0632-2022-12-67

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We present the articles of the first issue of scientific journal "Mining Science and Technology” (Russia) for 2025:

Scientists studied the effect of hydraulic excavator pump wear on fuel overconsumption. During operation, increased clearances, reduced volumetric efficiency, and higher energy losses lead to excessive fuel consumption. The research aimed to determine the optimal pump service life considering growing fuel costs. The team developed a mathematical model of pump ownership costs, created simulation algorithms in Simulink-Matlab, and evaluated fuel consumption increases. Using the Komatsu PC2000-8 excavator as an example, the study demonstrated how main hydraulic pumps' technical condition affects fuel overconsumption. The results established correlations between fuel overconsumption and pump wear, plus derived an equation for optimal replacement timing to minimize total costs. The proposed fuel overconsumption indicator (calculated as the ratio between actual and nominal fuel consumption per 1 mΒ³ of excavated material) enables data-driven determination of pumps' critical wear threshold. Implementation of this model can reduce combined pump ownership and fuel costs by up to 17%, accounting for pump condition deterioration rate, fuel prices, replacement costs, and mining-engineering conditions. All simulations were performed using Simulink-Matlab and Excel with specially developed calculation methodologies.

For more information, see the article:

πŸ“Œ Rakhutin M.G., Tran V.H., Krivenko A.E., Giang Q.Kh. Impact of the technical condition of main pumps on fuel consumption in a hydraulic excavator. Mining Science and Technology (Russia). 2025;10(1):67-74. https://doi.org/10.17073/2500-0632-2024-01-179


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#InEnglish #MST #MiningMachinery #HydraulicMiningExcavator #PumpTechnicalCondition #Hydraulics #Pump #Condition #Operation #Modeling #Leakage #Efficiency #Wear #Costs #Algorithm #Consumption #Overconsumption #OptimalServiceLife #Excavator #Pumps #ServiceLife #TechnicalCondition #Mining
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We present the articles of the first issue of scientific journal "Mining Science and Technology" (Russia) for 2025:

Scientists have developed a mechatronic system for testing gearboxes in mining shovels. The mechanical transmissions of hoist and drag winches, as well as crowd mechanisms, operate under extreme variable and shock cyclic loads, requiring strict quality control. The new test bench performs running-in and acceptance testing of gearboxes under conditions closely simulating actual operation. It supports testing for various shovel models including EKG-8US, EKG-10, EKG-12K, and others. The system uses DC motors (350 kW and 560 kW) and standard transistor converters with PWM control. The software, based on the "Pulsar-7" diagnostic system, provides manual and automatic control, multiple loading modes (constant, variable, cyclic), automated test reporting, and excavation cycle simulation. A mathematical model was developed in Simulink to simulate the running-in process. The test bench has been successfully implemented in industrial applications.

For more information, see the article:

πŸ“Œ Malafeev S.I., Malafeeva A.A., Konyashin V.I., Novgorodov A.A. Mechatronic system for running-in and testing of mechanical transmissions in mining shovels. Mining Science and Technology (Russia). 2025;10(1):75–83. DOI:10.17073/2500-0632-2024-05-262

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#InEnglish #MST #MiningMachinery #Mechatronics #Shovel #Gearbox #RunningIn #Testing #Simulation #Control #System #TestBench #Winch #Crowd #DC #PWM #Diagnostics #Load #EKG #Transmission #CyclicLoads
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