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Influence of impact load form on dynamic response of chock-shield support
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Shandong University of Science and Technology, China
Submission date: 2023-03-14
Final revision date: 2023-05-05
Acceptance date: 2023-06-14
Online publication date: 2023-06-25
Publication date: 2023-06-25
Corresponding author
Yunyue Xie   

Shandong University of Science and Technology, China
Eksploatacja i Niezawodność – Maintenance and Reliability 2023;25(3):168316
  • Mechanical-Hydraulic co-simulation model is developed for chock-shield support.
  • The influence of different loading forms on the reliability of the support is analyzed.
  • The joint that may reduce the reliability of the support is obtained.
  • The load at each joint of the support is typically non-uniformity.
Chock-shield support is usually used in undergroud coal mining to protect the roof. However, as the mining depth gets deeper, impact load that came from the roof becomes stronger and more frequent. This causes the support to bear a large number of dynamic loads, and reducing its reliability. To improve the support performance of the chock-shield support, the mixed-kinetic model was established using the mechanical-hydraulic co-simulation method. The load distribution law of the support joint under impact load form different stability forces, impact load amplitude, and impact frequency is discussed. The mechanical-hydraulic cooperative response of the chock-shield support are obtained. The results show that different joints show typical non-uniformity characteristic during the loading process. The proposed mechanical-hydraulic co-simulation method can more accurately obtain the dangerous points of hydraulic support reliability. The results of this study will help to improve the reliability of the chock-shield support.
This research was funded by the National Natural Science Foundation of China (52104164, 52274132) and the Natural Science Foundation of Shandong Province (ZR2020QE103), Central goverment guidance for local projects (YDZX2022013).
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