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Mechanical Properties of the Combination of Surrounding Rock and Primary Support under Impacting Load

Author

Listed:
  • Zhouyuan Ye

    (School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Liling Zhang

    (School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Zhihua Zhou

    (School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Kun Pan

    (School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Xubin Liu

    (School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Wenhui Liu

    (School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Qiuhong Wu

    (South Coal Mine Gas and Roof Disaster Prevention and Control Safety Production Key Laboratory, Xiangtan 411201, China)

Abstract

The SHPB experimental device was adopted to carry out the uniaxial impact tests in studying the failure characteristics of the combination of surrounding rocks and primary support for the tunnel, so as to explore the key factors affecting its dynamic strength and deforming properties. To simplify the practice model of the tunnel construction, the specimens combined by the surrounding rock and primary support were simulated by the concentric annular sandstone and cement mortar in this paper. The results indicate that the thickness of the primary support, the thickness of the surrounding rock and the proportion of the thickness of the primary support are the key factors affecting the dynamic strength of the combination of the surrounding rock and the primary support. The influence of dynamic loads on tunnel construction can be weakened by adjusting the above three factors, so that to improve the supporting capacity. The research has a significant reference for the designing of tunnel engineering under complex loads.

Suggested Citation

  • Zhouyuan Ye & Liling Zhang & Zhihua Zhou & Kun Pan & Xubin Liu & Wenhui Liu & Qiuhong Wu, 2023. "Mechanical Properties of the Combination of Surrounding Rock and Primary Support under Impacting Load," Sustainability, MDPI, vol. 15(5), pages 1-16, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:5:p:4410-:d:1085087
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    Cited by:

    1. Kamil Mucha, 2023. "Application of Rock Abrasiveness and Rock Abrasivity Test Methods—A Review," Sustainability, MDPI, vol. 15(14), pages 1-21, July.

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