Choice of the Arch Yielding Support for the Preparatory Roadway Located near the Fault

Krzysztof Skrzypkowski, Krzysztof Zagórski, Anna Zagórska, Derek B. Apel, Jun Wang, Huawei Xu and Lijie Guo
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Krzysztof Skrzypkowski: Faculty of Civil Engineering and Resource Management, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Kraków, Poland
Krzysztof Zagórski: Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Kraków, Poland
Anna Zagórska: Research Centre in Kraków, Institute of Geological Sciences, Polish Academy of Science, Senacka 1, 31-002 Kraków, Poland
Derek B. Apel: School of Mining and Petroleum Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada
Jun Wang: School of Mining and Petroleum Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada
Huawei Xu: School of Mining and Petroleum Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada
Lijie Guo: BGRIMM Technology Group, No. 22, Beixing Road, Daxing District, Beijing 102628, China

Energies, 2022, vol. 15, issue 10, 1-21

Abstract: The article presents a method of selecting an arch yielding support for preparatory workings driven in a hard coal seam. Particular attention was paid to discontinuous deformation in the form of a fault, which significantly contributes to the change of the excavation protection schemes. On the basis of the geometry of the machines and devices in the designed excavation, the support was selected, which was then checked for the ventilation criterion. In the next stage, analytical calculations were carried out using the determined spacing of the steel support in the fault zone and the area outside of it. Additionally, using the RS3 numerical software based on the finite element method, a rock mass model with a fault was built, through which the preparatory excavation passes. The aim of the research was to determine the total displacements occurring in the fault crossing zone for the excavation without support and with the use of steel arch yielding and with additional reinforcement in the form of straight segments. In conclusion, it was found that the variants of the excavation reinforcement can be modeled and selected in advance, which allows for the fastest possible execution of the driving and the maintenance of the minimum movement dimensions while passing through the fault.

Keywords: arch yielding support; fault; minimal section method; RS3 (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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