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Dynamic Analysis for the Hydraulic Leg Power of a Powered Roof Support

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  • Dawid Szurgacz

    (Center of Hydraulics DOH Ltd., 41-906 Bytom, Poland
    Polska Grupa Górnicza S.A., 40-039 Katowice, Poland)

Abstract

This paper presents the results of a study conducted to determine the dynamic power of a hydraulic leg. The hydraulic leg is the basic element that maintains the position of a powered roof support. It is located in the structure between the canopy and the floor base. The analysis assumes that its power must be greater than the energy of the impact of the rock mass. The energy of the rock mass is generated by tremors caused mainly by mining exploitation. The mining and geological structure of the rocks surrounding the longwall complex also have an influence on this energy generation. For this purpose, stationary tests of the powered roof support were carried out. The analysis refers to the space under the piston of the leg, which is filled with fluid at a given pressure. The bench test involved spreading the leg in the test station under a specified pressure. It was assumed that the acquisition of dynamic power would be at the point of pressure and increase in the space under the piston of the leg under forced loading. Based on the experimental studies carried out, an assessment was made with the assumptions of the methodology adopted. The results of the theoretical analysis showed consistency with the experimental results.

Suggested Citation

  • Dawid Szurgacz, 2021. "Dynamic Analysis for the Hydraulic Leg Power of a Powered Roof Support," Energies, MDPI, vol. 14(18), pages 1-12, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:18:p:5715-:d:633051
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    References listed on IDEAS

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    1. Marian Sofranko & Samer Khouri & Olga Vegsoova & Peter Kacmary & Tawfik Mudarri & Martin Koncek & Maxim Tyulenev & Zuzana Simkova, 2020. "Possibilities of Uranium Deposit Kuriskova Mining and Its Influence on the Energy Potential of Slovakia from Own Resources," Energies, MDPI, vol. 13(16), pages 1-21, August.
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    3. Dawid Szurgacz & Sergey Zhironkin & Michal Cehlár & Stefan Vöth & Sam Spearing & Ma Liqiang, 2021. "A Step-by-Step Procedure for Tests and Assessment of the Automatic Operation of a Powered Roof Support," Energies, MDPI, vol. 14(3), pages 1-16, January.
    4. Witold Kawalec & Natalia Suchorab & Martyna Konieczna-Fuławka & Robert Król, 2020. "Specific Energy Consumption of a Belt Conveyor System in a Continuous Surface Mine," Energies, MDPI, vol. 13(19), pages 1-10, October.
    5. Mirosław Bajda & Monika Hardygóra, 2021. "Analysis of Reasons for Reduced Strength of Multiply Conveyor Belt Splices," Energies, MDPI, vol. 14(5), pages 1-21, March.
    6. Dawid Szurgacz & Jarosław Brodny, 2019. "Analysis of the Influence of Dynamic Load on the Work Parameters of a Powered Roof Support’s Hydraulic Leg," Sustainability, MDPI, vol. 11(9), pages 1-13, May.
    7. Martin Beer & Radim Rybár & Michal Cehlár & Sergey Zhironkin & Peter Sivák, 2020. "Design and Numerical Study of the Novel Manifold Header for the Evacuated Tube Solar Collector," Energies, MDPI, vol. 13(10), pages 1-12, May.
    8. Peter Sivák & Peter Tauš & Radim Rybár & Martin Beer & Zuzana Šimková & František Baník & Sergey Zhironkin & Jana Čitbajová, 2020. "Analysis of the Combined Ice Storage (PCM) Heating System Installation with Special Kind of Solar Absorber in an Older House," Energies, MDPI, vol. 13(15), pages 1-20, July.
    9. Przemyslaw J. Borkowski, 2020. "Comminution of Copper Ores with the Use of a High-Pressure Water Jet," Energies, MDPI, vol. 13(23), pages 1-11, November.
    10. Mateusz Góralczyk & Pavlo Krot & Radosław Zimroz & Szymon Ogonowski, 2020. "Increasing Energy Efficiency and Productivity of the Comminution Process in Tumbling Mills by Indirect Measurements of Internal Dynamics—An Overview," Energies, MDPI, vol. 13(24), pages 1-19, December.
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    12. Piotr Bortnowski & Lech Gładysiewicz & Robert Król & Maksymilian Ozdoba, 2021. "Energy Efficiency Analysis of Copper Ore Ball Mill Drive Systems," Energies, MDPI, vol. 14(6), pages 1-14, March.
    13. Magdalena Tutak & Jarosław Brodny & Dawid Szurgacz & Leszek Sobik & Sergey Zhironkin, 2020. "The Impact of the Ventilation System on the Methane Release Hazard and Spontaneous Combustion of Coal in the Area of Exploitation—A Case Study," Energies, MDPI, vol. 13(18), pages 1-31, September.
    14. Janina Świątek & Tomasz Janoszek & Tomasz Cichy & Kazimierz Stoiński, 2021. "Computational Fluid Dynamics Simulations for Investigation of the Damage Causes in Safety Elements of Powered Roof Supports—A Case Study," Energies, MDPI, vol. 14(4), pages 1-20, February.
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    Cited by:

    1. Krzysztof Czajka & Witold Kawalec & Robert Król & Izabela Sówka, 2022. "Modelling and Calculation of Raw Material Industry," Energies, MDPI, vol. 15(14), pages 1-6, July.
    2. Adam Wróblewski & Pavlo Krot & Radosław Zimroz & Timo Mayer & Jyri Peltola, 2023. "Review of Linear Electric Motor Hammers—An Energy-Saving and Eco-Friendly Solution in Industry," Energies, MDPI, vol. 16(2), pages 1-28, January.
    3. Dawid Szurgacz & Beata Borska & Sergey Zhironkin & Ryszard Diederichs & Anthony J. S. Spearing, 2022. "Optimization of the Load Capacity System of Powered Roof Support: A Review," Energies, MDPI, vol. 15(16), pages 1-15, August.
    4. Lirong Wan & Xuehui Yu & Dejian Ma & Zhaosheng Meng & Qingliang Zeng & Guoqing Qi, 2022. "Dynamic Response Analysis of a Novel Anti-Impact Pressure Balance Jack," Energies, MDPI, vol. 15(14), pages 1-15, July.
    5. Qingliang Zeng & Zhaoji Li & Lirong Wan & Dejian Ma & Jiantao Wang, 2022. "Research on Dynamic Characteristics of Canopy and Column of Hydraulic Support under Impact Load," Energies, MDPI, vol. 15(13), pages 1-20, June.
    6. Dawid Szurgacz & Beata Borska & Ryszard Diederichs & Anthony J. S. Spearing & Sergey Zhironkin, 2023. "Minimizing Internal Leaks of a Powered Roof Support’s Hydraulic Prop Based on Double Block with Charging," Energies, MDPI, vol. 16(3), pages 1-14, January.

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