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Vibration response difference of caving mechanism under coal rock impact based on mechanical–hydraulic coupling

Scientific reports, 2023-08, Vol.13 (1), p.13794-13794, Article 13794 [Peer Reviewed Journal]

The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;Springer Nature Limited 2023 ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/s41598-023-40967-z ;PMID: 37612340

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  • Title:
    Vibration response difference of caving mechanism under coal rock impact based on mechanical–hydraulic coupling
  • Author: Zhu, Yanpeng ; Zeng, Qingliang ; Wan, Lirong ; Yang, Yang ; Li, Zhe
  • Subjects: Coal ; Hydraulics ; Mechanical properties
  • Is Part Of: Scientific reports, 2023-08, Vol.13 (1), p.13794-13794, Article 13794
  • Description: Abstract Top coal caving in fully mechanized caving mining will cause an irregular impact on the caving mechanism of hydraulic support. The vibration response of the caving mechanism varies under different forms of impact. This response difference is a prerequisite for new coal rock identification technology in intelligent mining. Therefore, this work studies the difference in vibration response of the caving mechanism under different forms of impact. An innovative mechanical–hydraulic coupling system model of the caving mechanism impact by coal rock is established. The metal plate impact test proved the significant difference in vibration response of the caving mechanism under coal rock impact of different materials. Afterward, a more improved mechanical–hydraulic co-simulation model analyzed the difference in the vibration response of the caving mechanism under different rock materials, volumes, velocities and impact positions. The results show that the vibration response is more intense under rock impact than under coal impact. A lower position, a faster velocity and a larger volume correspond to a more noticeable response difference in the caving mechanism. The vibration and fault sensitive areas of the caving mechanism are determined. This study has a reference significance for improving the caving mechanism's structural design and failure prevention. The conclusions provide guidance for a new intelligent coal rock identification technology based on vibration signals.
  • Publisher: London: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/s41598-023-40967-z
    PMID: 37612340
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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