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Research on Dynamic Properties of Deep Marble Influenced by High Temperature

Author

Listed:
  • Xianglong Li

    (Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
    New Blasting Technology Engineering Research Center of Yunnan Provincial Education Department, Kunming 650093, China)

  • Yongbo Wu

    (Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
    New Blasting Technology Engineering Research Center of Yunnan Provincial Education Department, Kunming 650093, China)

  • Lihua He

    (Faculty of Mining Industry, Kunming Metallurgy College, Kunming 650033, China)

  • Xiaohua Zhang

    (Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
    New Blasting Technology Engineering Research Center of Yunnan Provincial Education Department, Kunming 650093, China)

  • Jianguo Wang

    (Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
    New Blasting Technology Engineering Research Center of Yunnan Provincial Education Department, Kunming 650093, China)

Abstract

Deep rock will be influenced by the excavation disturbances of different degrees, which seriously affects the safety production of underground mines. Considering that deep rock will be impacted by different temperatures and varied disturbance degrees, this work analyzes the effect of temperature on the dynamic properties of marble by means of the dynamic and static combined SHPB test device. The results reveal that as the temperature climbed, the diameter and height of the specimen increased and the mass and longitudinal wave velocity dropped. The variation laws of total stress–strain curves after varied high temperatures are substantially the same; the peak stress was negatively correlated with the action temperature. At 25 °C~400 °C, the failure mode of specimens is less affected by temperature. When the temperature is higher than 400 °C, the failure degree of specimens increases with the growth of temperature. At 25~400 °C, the above energy varies minimally. At 400~800 °C, with the increase in temperature, the incident energy, transmitted energy and absorption energy decrease, and the reflection energy increases gradually.

Suggested Citation

  • Xianglong Li & Yongbo Wu & Lihua He & Xiaohua Zhang & Jianguo Wang, 2022. "Research on Dynamic Properties of Deep Marble Influenced by High Temperature," Mathematics, MDPI, vol. 10(15), pages 1-16, July.
    • Handle: RePEc:gam:jmathe:v:10:y:2022:i:15:p:2603-:d:872195
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    Cited by:

    1. Linqi Huang & Shaofeng Wang & Xin Cai & Zhengyang Song, 2022. "Mathematical Problems in Rock Mechanics and Rock Engineering," Mathematics, MDPI, vol. 11(1), pages 1-3, December.

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